甲亚胺-H分光光度法测定工作场所空气中硼
Chinese Journal of Health Laboratory Technology(2009)
Abstract
目的:改进工作场所空气中硼的测定方法。方法:用装有0.2 mol/L氢氧化钠溶液的多孔玻板吸收管采集工作场所空气中三氟化硼,分解为硼酸,在pH 5.6~5.8的乙酸铵-乙酸介质中,以甲亚胺-H分光光度法于414 nm波长处测定吸光度。结果:方法检出限为0.08 mg/m3。精密度(RSD)为1.64%~4.54%,加标回收率为94.8%~108.2%。方法简便、快速,灵敏度较高,显色产物稳定,不使用有毒试剂。结论:方法符合工作场所空气测定要求,测定空气样品获得比较满意的结果。
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Key words
Spectrophotometry,Boron,The air of the workplace
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