石墨炉原子吸收法测定空气中铬酸雾

沃燕娜

引用本文:	沃燕娜.石墨炉原子吸收法测定空气中铬酸雾[J].环境监控与预警,2016,8(2):25-27
	WO Yan na.Determination of Chromic Acid Mist in the Air by Graphite Furnace Atomic Absorption Spectrometry[J].Environmental Monitoring and Forewarning,2016,8(2):25-27

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石墨炉原子吸收法测定空气中铬酸雾
沃燕娜
宁波市北仑区环境保护监测站，浙江宁波 315800

摘要:

采用石墨炉原子吸收法对空气中铬酸雾进行测定，方法在待测液中铬质量浓度为1~10μg/L范围内线性良好，r=0.999 6，检出限为0.001mg/m³，测定结果的相对标准差为1.64%~4.53%，样品加标回收率为91.0%~95.4%，且用该方法与《固定污染源排气中铬酸雾的测定二苯基碳酰二肼分光光度法》（HJ/T 29—1999）分别测定实际样品中铬的质量浓度，结果无明显差异。

关键词: 石墨炉原子吸收法铬酸雾六价铬

DOI：

分类号:O657.31；X831

基金项目:

Determination of Chromic Acid Mist in the Air by Graphite Furnace Atomic Absorption Spectrometry

WO Yanna

Beilun Environmental Protection Monitoring Station， Ningbo， Zhejiang 315800， China

Abstract:

Chromic acid mist in the air was measured by graphite furnace atomic absorption spectrometry. The method had a good linearity in the mass concentration range of 1 to 10μg/L，r=0.999 6. The detection limit was 0.001 mg/m³. The relative standard deviation of the measurement was 1.64%~4.53%， and the recovery rates were 91.0%~95.4%. There was no apparent difference in the determination of chromium mass concentration between this method and the 《HJ/T 29-1999》 method.

Key words: Graphite furnace atomic absorption method Chromic acid mist Cr⁶⁺