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Determination of phosphoric acid in the air of workplace by ion chromatography
Author(s): LI Shuang-feng, YI Juan, CAI Jin-min
Pages: 144-
145
Year: 2011
Issue:
2
Journal: Chinese Journal of Industrial Hygiene and Occupational Diseases
Keyword: Chromatography; ion exchange; Phosphoric acids; Workplace;
Abstract: 目的 建立工作场所空气中磷酸的离子色谱测定法.方法 空气中磷酸经微孔滤膜采集后,用去离子水洗脱,经色谱柱分离,电导检测器检测,用离子色谱法进行分离测定,保留时间定性,峰高或峰面积定量.结果 方法 线性范围为0~20 μg/ml,相对标准偏差(RSD)为1.95%~3.31%,洗脱效率为103.0%~109.6%,最低检出限为0.1 μg/ml(进样量20.0μl),若采集75 L空气进行测定,最低...
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