Determination of Arsenic in Soil by Ultrasonic Assisted Slurry Sampling Hydride Generation (HG) in-Situ Dielectric Barrier Discharge Trap (DBD)-Optical Emission Spectrometry (OES)

文献类型： 外文期刊

第一作者： Zhang, Yaru

作者： Zhang, Yaru;Tian, Di;Liu, Jixin;Mao, Xuefei;Na, Xing;Shao, Yunbin;Liu, Jixin

作者机构：

关键词： Dielectric barrier discharge; hydride generation; optical emission spectrometry; slurry sampling; soil

期刊名称：ANALYTICAL LETTERS （ 影响因子：2.267； 五年影响因子：1.823 ）

ISSN： 0003-2719

年卷期： 2022 年 55 卷 9 期

页码：

收录情况： SCI

摘要： An ultrasonic assisted slurry sampling procedure was coupled with hydride generation in-situ dielectric barrier discharge trap optical emission spectrometry (HG-in situ DBD trap-OES) to provide the simple and fast determination of arsenic in soil. The soil was treated HNO3 and HF in an ultrasonic bath for 25 min, subsequently diluted with 6% HCl (v/v) and 40 g L-1 thiourea, and placed into the ultrasonic bath again for 10 min to obtain a stable and homogeneous slurry that was introduced to HG-in-situ DBD trap-OES for As determination. Under the optimal conditions, the calibration coefficient exceeded 0.995 from 2 mu g L-1 to 200 mu g L-1. A method detection limit of 0.18 mg kg(-1) was achieved for As in soil (250 times dilution) with a 3.4% relative standard deviation. The developed method was validated by the determination of As in three soil certified reference materials including GBW07430 (As, 18 +/- 2 mg kg(-1)), GBW07447 (As, 10.7 +/- 0.5 mg kg(-1)), and GBW07449 (As, 8.7 +/- 0.6 mg kg(-1)), as well as two real soil samples. The results agreed well with the certified values and the measurements by inductively coupled plasma - mass spectrometry. With advantages of simple pretreatment procedures, small size/weight, low power consumption, and low manufacturing cost, the developed method has the potential to be widely applied in soil analysis.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序