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+