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1. 发明授权

US06635147B1 Method for analyzing boron-containing alkaline pulping liquors 失效
标题翻译：分析含硼碱性制浆液的方法
公开(公告)号：US06635147B1
公开(公告)日：2003-10-21
申请号：US09571297
申请日：2000-05-14
申请人： Wu-hwa Wesley Hsu
发明人： Wu-hwa Wesley Hsu
IPC分类号： D21C302
CPC分类号： G01N33/343 , D21C7/12 , G01N31/164
摘要： Chemical species (e.g., metaborate, carbonate, hydroxide and sulfide) in a boron-containing alkaline wood pulping liquor sample are determined quantitatively by (i) subjecting a first aliquot portion of the sample to a primary acid titration analysis to derive multiple equivalence points at different respective pH values; (ii) subjecting a second aliquot portion of the sample to an analysis to determine the quantitative presence of boron or sulfide ions therein, and then (iii) determining the quantitative presence in the sample of at least one of the chemical species. Wood pulping parameters may thus be determined on the basis of the quantitative presence of the chemical species to assist in process and/or quality control of the wood pulping operation. For example, the sample may be analyzed for boron content using calorimeter or atomic spectroscopy and/or analyzed for sulfide ion content using a secondary silver sulfide precipitation titration analysis, each of which may be conducted substantially simultaneously with the primary acid titration analysis.
摘要翻译：通过以下步骤定量测定含硼碱性木材制浆液样品中的化学物质（例如偏硼酸盐，碳酸盐，氢氧化物和硫化物）：（i）使样品的第一等分试样部分进行初级酸滴定分析，以得出多个等效点不同的各自的pH值; （ii）使样品的第二等分试样部分进行分析以确定其中的硼或硫化物离子的定量存在，然后（iii）确定样品中至少一种化学物质的定量存在。因此可以基于化学物质的定量存在来确定木材制浆参数，以辅助木材制浆操作的过程和/或质量控制。例如，可以使用量热计或原子光谱分析样品的硼含量和/或使用二次硫化银沉淀滴定分析来分析硫化物离子含量，其中每一个可以与初级酸滴定分析基本上同时进行。

2. 发明授权

US06913672B2 Methods for analyzing boron-containing alkaline pulping liquors 失效
标题翻译：分析含硼碱性制浆液的方法
公开(公告)号：US06913672B2
公开(公告)日：2005-07-05
申请号：US10660298
申请日：2003-09-11
申请人： Wu-hwa Wesley Hsu
发明人： Wu-hwa Wesley Hsu
IPC分类号： D21C7/12 , G01N27/416 , G01N31/16 , G01N33/34 , G01N33/46 , D21C3/02
CPC分类号： G01N33/343 , D21C7/12 , G01N31/164
摘要： Chemical species (e.g., metaborate, carbonate, hydroxide and sulfide) in a boron-containing alkaline wood pulping liquor sample are determined quantitatively by (i) subjecting a first aliquot portion of the sample to a primary acid titration analysis to derive multiple equivalence points at different respective pH values; (ii) subjecting a second aliquot portion of the sample to an analysis to determine the quantitative presence of boron or sulfide ions therein, and then (iii) determining the quantitative presence in the sample of at least one of the chemical species. Wood pulping parameters may thus be determined on the basis of the quantitative presence of the chemical species to assist in process and/or quality control of the wood pulping operation. For example, the sample may be analyzed for boron content using colorimetry or atomic spectroscopy and/or analyzed for sulfide ion content using a secondary silver sulfide precipitation titration analysis, each of which may be conducted substantially simultaneously with the primary acid titration analysis.
摘要翻译：通过以下步骤定量测定含硼碱性木材制浆液样品中的化学物质（例如偏硼酸盐，碳酸盐，氢氧化物和硫化物）：（i）使样品的第一等分试样部分进行初级酸滴定分析，以得出多个等效点不同的各自的pH值; （ii）使样品的第二等分试样部分进行分析以确定其中的硼或硫化物离子的定量存在，然后（iii）确定样品中至少一种化学物质的定量存在。因此可以基于化学物质的定量存在来确定木材制浆参数，以辅助木材制浆操作的过程和/或质量控制。例如，可以使用比色法或原子光谱分析样品的硼含量和/或使用二次硫化银沉淀滴定分析来分析硫化物离子含量，其中每一个可以与初级酸滴定分析基本上同时进行。

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