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1. 发明公开

EP0884576A4 GAS COLLECTING APPARATUS 失效
标题翻译： GASSAMMELVORRICHTUNG
公开(公告)号：EP0884576A4
公开(公告)日：2002-04-17
申请号：EP97912431
申请日：1997-11-12
申请人： OHBAYASHI CORP
发明人： KAWACHI TAKESHI , MORIYA MASAHIRO , SATO YASUE
IPC分类号： G01N1/22 , G01N1/24 , G01N33/00 , G01N21/78 , G01N31/00
CPC分类号： G01N1/2273 , G01N1/24 , G01N33/0011 , G01N2001/2217 , G01N2001/241 , Y10T436/25875
摘要： The present invention relates to a gas collecting system collecting an inspection objective gas, such as a toxic gas discharged into an ambient air, and particularly to a gas collecting system which can achieve down-sizing of the system and permit implementation of analysis of gas concentration of the inspection objective gas at high precision with simple operation. It has a simple construction with a portable air pump driven by a portable battery and sucking a gas within an inspection objective space, a collection vessel filled with a collecting liquid for collecting an inspection objective gas from the gas, an induction passage connected to the collection vessel at one end and communicated with the inspection objective space at the other end, for introducing the gas into the collection vessel, a suction passage connected to the collection vessel at one end and connected to a suction port of the air pump at the other end for introducing the gas within the collection vessel into the air pump, an accumulation body connected to a discharge port of the air pump, accumulating the gas discharged from the air pump and serving as a volumeter, drying means providing between the accumulation body and the collection vessel for drying the gas, a pressure switch detecting an internal pressure of the accumulation body, a bypass passage connecting the accumulation body to the suction port of the air pump by passing the collection vessel, and switching means for switching a flow path for connecting the accumulation body to one of the discharge port of the air pump and the bypass passage and connecting the discharge port of the air pump to an ambient air opening passage when the accumulation body is connected to the bypass passage. Therefore, respective of these components can be assembled in compact as a whole. Accordingly, the gas collecting system is portable with high transporting ability, requires assembling and adjustment of the components to permit simple collection of gas at an arbitrary place. Also, the system is simple in handling and requires no skill to permit anybody to use.

2. 发明公开

EP0899570A4 METHOD FOR DETERMINING FORMALDEHYDE PRESENT IN AIR 失效
标题翻译： VERFAHREN ZUR FESTSTELLUNG DES IN LUFT ANWESENDEN FORMALDEHYDS
公开(公告)号：EP0899570A4
公开(公告)日：2001-10-10
申请号：EP97950413
申请日：1997-12-24
申请人： OHBAYASHI CORP
发明人： KAWACHI TAKESHI , MORIYA MASAHIRO , SATO YASUE
IPC分类号： G01N31/22 , G01N33/00 , G01N31/00
CPC分类号： G01N31/223 , G01N33/0047 , Y10T436/200833 , Y10T436/202499
摘要： The present invention relates to a method for analyzing formaldehyde. More specifically, the invention relates to a method for analyzing formaldehyde in the ambient air which can collect formaldehyde gas in the ambient air and simply implement an analysis of concentration thereof. A method for analyzing formaldehyde in the ambient air according to the present invention comprises the steps of passing a given amount of air to be inspected through a collecting vessel filled with a given amount of 2N-KOH solution or 2N-KOH solution; filling a given amount of AHMT reagent in the collecting vessel and leaving the reagent for a given amount of time, setting a standard color solution to an absorptiometer for adjusting the indication value thereof to a predetermined value, adding a given amount of KIO4 reagent to the collecting vessel, and setting the collecting vessel to the absorptiometer to detect formaldehyde concentration from the indication value of the absorptiometer. The formaldehyde in the ambient air can be efficiently collected by 2N-KOH solution or 2N-NaOH solution. Furthermore, under a premise that a given amount of the air passes through the reaction vessel, by adjusting the indication value of the absorptiometer to the predetermined value by using a standard colored liquid, the indication value upon measurement of absorbance of an unknown sample can be directly read as the concentration of the formaldehyde. Accordingly, calculation using molecular weight of formaldehyde and volume conversion coefficients as gas and so forth become unnecessary, and expert knowledge and chemical calculation becomes unnecessary. In addition, transferring or division of the sampled solution becomes unnecessary, therefore requiring no skill in handling.
摘要翻译：本发明涉及甲醛分析方法。更具体地，本发明涉及一种用于分析环境空气中的甲醛的方法，其可以在环境空气中收集甲醛气体并且简单地实现其浓度分析。根据本发明的用于分析环境空气中的甲醛的方法包括以下步骤：通过装有给定量的2N-KOH溶液或2N-KOH溶液的收集容器使给定量的被检查空气通过; 在收集容器中填充给定量的AHMT试剂并将试剂放置一定时间，将标准色溶液设置到吸光计上，将其指示值调节到预定值，向该化合物中加入给定量的KIO4试剂收集容器，并将收集容器设置到吸光计上，以从吸光计的指示值检测甲醛浓度。环境空气中的甲醛可以用2N-KOH溶液或2N-NaOH溶液有效收集。此外，在给定量的空气通过反应容器的前提下，通过使用标准有色液体将吸光光度计的指示值调节到预定值，在测量未知样品的吸光度时的指示值可以是直接读作甲醛浓度。因此，使用甲醛的分子量和气体等的体积转换系数的计算变得不必要，并且不需要专家知识和化学计算。此外，采样解决方案的传送或划分变得不必要，因此不需要处理技巧。

3. 发明专利

AU4964497A Gas collecting apparatus 未知
公开(公告)号：AU4964497A
公开(公告)日：1998-06-10
申请号：AU4964497
申请日：1997-11-12
申请人： OHBAYASHI CORP
发明人： KAWACHI TAKESHI , MORIYA MASAHIRO , SATO YASUE
IPC分类号： G01N1/22 , G01N1/24 , G01N33/00 , G01N31/00 , G01N21/78
摘要： The present invention relates to a gas collecting system collecting an inspection objective gas, such as a toxic gas discharged into an ambient air, and particularly to a gas collecting system which can achieve down-sizing of the system and permit implementation of analysis of gas concentration of the inspection objective gas at high precision with simple operation. It has a simple construction with a portable air pump driven by a portable battery and sucking a gas within an inspection objective space, a collection vessel filled with a collecting liquid for collecting an inspection objective gas from the gas, an induction passage connected to the collection vessel at one end and communicated with the inspection objective space at the other end, for introducing the gas into the collection vessel, a suction passage connected to the collection vessel at one end and connected to a suction port of the air pump at the other end for introducing the gas within the collection vessel into the air pump, an accumulation body connected to a discharge port of the air pump, accumulating the gas discharged from the air pump and serving as a volumeter, drying means providing between the accumulation body and the collection vessel for drying the gas, a pressure switch detecting an internal pressure of the accumulation body, a bypass passage connecting the accumulation body to the suction port of the air pump by passing the collection vessel, and switching means for switching a flow path for connecting the accumulation body to one of the discharge port of the air pump and the bypass passage and connecting the discharge port of the air pump to an ambient air opening passage when the accumulation body is connected to the bypass passage. Therefore, respective of these components can be assembled in compact as a whole. Accordingly, the gas collecting system is portable with high transporting ability, requires assembling and adjustment of the components to permit simple collection of gas at an arbitrary place. Also, the system is simple in handling and requires no skill to permit anybody to use.

4. 发明专利

AU734428B2 Method for determining formaldehyde present in air 未知
公开(公告)号：AU734428B2
公开(公告)日：2001-06-14
申请号：AU5340798
申请日：1997-12-24
申请人： OHBAYASHI CORP
发明人： KAWACHI TAKESHI , MORIYA MASAHIRO , SATO YASUE
IPC分类号： G01N31/22 , G01N33/00 , G01N31/00
摘要： The present invention relates to a method for analyzing formaldehyde. More specifically, the invention relates to a method for analyzing formaldehyde in the ambient air which can collect formaldehyde gas in the ambient air and simply implement an analysis of concentration thereof. A method for analyzing formaldehyde in the ambient air according to the present invention comprises the steps of passing a given amount of air to be inspected through a collecting vessel filled with a given amount of 2N-KOH solution or 2N-KOH solution; filling a given amount of AHMT reagent in the collecting vessel and leaving the reagent for a given amount of time, setting a standard color solution to an absorptiometer for adjusting the indication value thereof to a predetermined value, adding a given amount of KIO4 reagent to the collecting vessel, and setting the collecting vessel to the absorptiometer to detect formaldehyde concentration from the indication value of the absorptiometer. The formaldehyde in the ambient air can be efficiently collected by 2N-KOH solution or 2N-NaOH solution. Furthermore, under a premise that a given amount of the air passes through the reaction vessel, by adjusting the indication value of the absorptiometer to the predetermined value by using a standard colored liquid, the indication value upon measurement of absorbance of an unknown sample can be directly read as the concentration of the formaldehyde. Accordingly, calculation using molecular weight of formaldehyde and volume conversion coefficients as gas and so forth become unnecessary, and expert knowledge and chemical calculation becomes unnecessary. In addition, transferring or division of the sampled solution becomes unnecessary, therefore requiring no skill in handling.

5. 发明专利

AU720646B2 Gas collecting apparatus 未知
公开(公告)号：AU720646B2
公开(公告)日：2000-06-08
申请号：AU4964497
申请日：1997-11-12
申请人： OHBAYASHI CORP
发明人： KAWACHI TAKESHI , MORIYA MASAHIRO , SATO YASUE
IPC分类号： G01N1/22 , G01N1/24 , G01N33/00 , G01N31/00 , G01N21/78
摘要： The present invention relates to a gas collecting system collecting an inspection objective gas, such as a toxic gas discharged into an ambient air, and particularly to a gas collecting system which can achieve down-sizing of the system and permit implementation of analysis of gas concentration of the inspection objective gas at high precision with simple operation. It has a simple construction with a portable air pump driven by a portable battery and sucking a gas within an inspection objective space, a collection vessel filled with a collecting liquid for collecting an inspection objective gas from the gas, an induction passage connected to the collection vessel at one end and communicated with the inspection objective space at the other end, for introducing the gas into the collection vessel, a suction passage connected to the collection vessel at one end and connected to a suction port of the air pump at the other end for introducing the gas within the collection vessel into the air pump, an accumulation body connected to a discharge port of the air pump, accumulating the gas discharged from the air pump and serving as a volumeter, drying means providing between the accumulation body and the collection vessel for drying the gas, a pressure switch detecting an internal pressure of the accumulation body, a bypass passage connecting the accumulation body to the suction port of the air pump by passing the collection vessel, and switching means for switching a flow path for connecting the accumulation body to one of the discharge port of the air pump and the bypass passage and connecting the discharge port of the air pump to an ambient air opening passage when the accumulation body is connected to the bypass passage. Therefore, respective of these components can be assembled in compact as a whole. Accordingly, the gas collecting system is portable with high transporting ability, requires assembling and adjustment of the components to permit simple collection of gas at an arbitrary place. Also, the system is simple in handling and requires no skill to permit anybody to use.

6. 发明专利

AU5340798A Method for determining formaldehyde present in air 未知
公开(公告)号：AU5340798A
公开(公告)日：1998-08-03
申请号：AU5340798
申请日：1997-12-24
申请人： OHBAYASHI CORP
发明人： KAWACHI TAKESHI , MORIYA MASAHIRO , SATO YASUE
IPC分类号： G01N31/22 , G01N33/00 , G01N31/00
摘要： The present invention relates to a method for analyzing formaldehyde. More specifically, the invention relates to a method for analyzing formaldehyde in the ambient air which can collect formaldehyde gas in the ambient air and simply implement an analysis of concentration thereof. A method for analyzing formaldehyde in the ambient air according to the present invention comprises the steps of passing a given amount of air to be inspected through a collecting vessel filled with a given amount of 2N-KOH solution or 2N-KOH solution; filling a given amount of AHMT reagent in the collecting vessel and leaving the reagent for a given amount of time, setting a standard color solution to an absorptiometer for adjusting the indication value thereof to a predetermined value, adding a given amount of KIO4 reagent to the collecting vessel, and setting the collecting vessel to the absorptiometer to detect formaldehyde concentration from the indication value of the absorptiometer. The formaldehyde in the ambient air can be efficiently collected by 2N-KOH solution or 2N-NaOH solution. Furthermore, under a premise that a given amount of the air passes through the reaction vessel, by adjusting the indication value of the absorptiometer to the predetermined value by using a standard colored liquid, the indication value upon measurement of absorbance of an unknown sample can be directly read as the concentration of the formaldehyde. Accordingly, calculation using molecular weight of formaldehyde and volume conversion coefficients as gas and so forth become unnecessary, and expert knowledge and chemical calculation becomes unnecessary. In addition, transferring or division of the sampled solution becomes unnecessary, therefore requiring no skill in handling.

7. 发明专利

JPH11128329A METHOD FOR DISPLAYING CAPTURING CONDITION OF FORMALDEHYDE CAPTURING MATERIALS, FORMALDEHYDE ADSORBENT, FORMALDEHYDE GENERATION SUPPRESSING MEMBER AND FORMALDEHYDE CAPTURING SECTION 失效
公开(公告)号：JPH11128329A
公开(公告)日：1999-05-18
申请号：JP30171297
申请日：1997-11-04
申请人： OHBAYASHI CORP
发明人： KAWACHI TAKESHI , MORIYA MASAHIRO , SATO YASUE
IPC分类号： B27K5/00 , A61L9/01 , B01J20/02 , B01J20/28 , E04B1/92
摘要： PROBLEM TO BE SOLVED: To provide a formaldehyde capturing material or the like excellent in the characteristics to capture formaldehyde by using an ammonium salt. SOLUTION: The formaldehyde capturing material consists of the ammonium salt, such as ammonium amidesulfate and ammonium sulfate. The ammonium salt is a substance acquired as a result of studies by the inventors of this invention and has the excellent characteristic to capture the formaldehyde. If this ammonium salt is applied to interior materials, such as gypsum board and wall paper, coating materials, such as paint and wax, and interior furniture, the formaldehyde released into interior spaces may be easily captured and decreased. In addition, if the ammonium salt is applied to plywood material which emit the formaldehyde, the dissipation of the formaldehyde into the air is prevented.

8. 发明专利

JPH11101722A CAPTURING INSTRUMENT FOR ANALYZING GAS 失效
公开(公告)号：JPH11101722A
公开(公告)日：1999-04-13
申请号：JP26018297
申请日：1997-09-25
申请人： OHBAYASHI CORP
发明人： KAWACHI TAKESHI , MORIYA MASAHIRO , SATO YASUE
IPC分类号： G01N1/22
摘要： PROBLEM TO BE SOLVED: To provide a capturing instrument for analyzing gas that can store a capturing container while a collection liquid is injected by preventing an elastic cap that is formed by synthetic rubber from affecting the collection liquid. SOLUTION: An impinger 14 is formed by a closed-end cylindrical glass container in the form of a test tube and a port part 14a is blocked by an elastic cap 22. A specific amount of collection liquid 28 is injected into the impinger 14 and a gas-introducing pipe 24 and a suction pipe 26 are inserted into the elastic cap 22. A part that is inserted inside by covering the port part 14a of at least the impinger 14 of the elastic cap 22 being formed by synthetic rubber is covered with an insulation film 40 being formed by a material that does not affect the collection liquid 28, thus preventing a gas component being generated by the elastic cap 22 from affecting the inside of the impinger 14.

9. 发明专利

JPH11118784A METHOD FOR ANALYZING FORMALDEHYDE IN AIR 失效
公开(公告)号：JPH11118784A
公开(公告)日：1999-04-30
申请号：JP27861797
申请日：1997-10-13
申请人： OHBAYASHI CORP
发明人： KAWACHI TAKESHI , MORIYA MASAHIRO , SATO YASUE
IPC分类号： G01N31/00 , G01N1/22 , G01N31/22
摘要： PROBLEM TO BE SOLVED: To measure the concentration of formaldehyde in the air accurately in a short time in the field at low cost through simple operation without requiring any skill. SOLUTION: An impinger 14 injected with 20 ml of 2N-NaOH solution as a capturing liquid is fixed t a gas capturing unit 10 in order to suck the air. 0.5 ml of AHMT reagent is sucked from avial bottle A by means of a syringe and added to the impinger 14 and left as it is for 15-20 min or longer. On the other hand, a standard color solution is set in an absorbance meter and adjusted to point a specified value by means of a dial. 0.5 ml of KIO4 reagent is sucked from a vial bottle B and added to the impinger 14. The impinger 14 is set in absorbance meter and a pointed value is read out as the concentration of formaldehyde in the air.

10. 发明专利

JPH10197511A ANALYZING METHOD FOR FORMALDEHYDE IN AIR 失效
公开(公告)号：JPH10197511A
公开(公告)日：1998-07-31
申请号：JP63697
申请日：1997-01-07
申请人： OHBAYASHI CORP
发明人： KAWACHI TAKESHI , MORIYA MASAHIRO , SATO YASUE
IPC分类号： G01N31/00 , G01N1/22
摘要： PROBLEM TO BE SOLVED: To measure accurately the concentration of formaldehyde in the air in a short time at the site, at a low cost, with simple operation, and requiring no skillfulness. SOLUTION: As a capturing liquid, 2.0ml 2N-KOH solution is injected in a capturing tube 20, which is attached to a gas capturing device 1, and the air is sucked. 0.5ml AHMT reagent is taken out of a vial A using a pipette and added to the content of the tube 20, and this condition is kept for 15-20min. Meantime a standard color solution is set in a photo-absorptiometer, and adjustment is made with a dial so that the indication gives the specified value. 0.5ml KIO4 reagent is taken out from a vial B using a pipette and added to the tube 20. The tube 20 is set in the photo-absorptiometer, and the indication is read, which gives the concentration of formaldehyde in the air.

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