Author(s)

ZHOU Zi-Kai ¹, LI Luan ¹, ZHANG Chao ²

Affiliation(s)

¹ School of Resources Environmental & Chemical Engineering, Nanchang University, Nanchang city, 330031, China
² School of Materials Science and Engineering，Nanchang University，Nanchang city, 330031

Corresponding Author

ZHOU Zi-Kai

ABSTRACT

The Chinese national environmental standard detection method HJ 680-2013 was improved. The sample was pretreated and digested by acid mixtures and ultrasonic water bath digestion method. The trace bismuth in soil and sediment were determined by atomic fluorescence spectrometry. GBW07430, GBW07446 and GBW07452 were selected as the national first-class standard materials for soil composition analysis. The effects of 12kinds of acid mixtures digestion systems on the determination results of trace bismuth in soil and sediment were discussed, and the best experimental conditions were selected. The hydrochloric acid, nitric acid, sulfuric acid and hydrofluoric acid (volume ratio: 0.5:1.5:0.5:0.5) was used as the digestion solution in the acid mixtures system, and the samples were digested by ultrasonic water bath method. The digestion time was 0.5 h.That trace bismuth mass concentration were in the range of 0.10 to 10.0 μg/L and that had a good linear relationship, the linear correlation coefficient was more than 0.9998, the limit of detection (LOD) was 0.005 mg/kg, the limit of quantitation (LOQ) was 0.015 mg/kg, the relative standard deviations (RSD) were 0.39 to 6.65%, and the recoveries were 103 to 112%. The method has been verified by the national first-class standard material for soil composition analysis and the types of agricultural, construction soil and pipeline sludge sediment samples collected from Taizhou environment. It is proved that the method can effectively digest different types of samples, meet the current environmental analysis of soil and sediment detection work, and effectively improve the accurate and rapid determination work, the requirement of high-throughput sample determination of trace bismuth was solved.

KEYWORDS

Bismuth, Digestion methods, Soil, Sediment, Environmental monitoring, Atomic fluorescence spectrometry

CITE THIS PAPER

ZHOU Zi-Kai, LI Luan, ZHANG Chao, Determination of trace bismuth in soil and sediment by ultrasonic water bath digestion-Atomic Fluorescence Spectrometry . Analytical Chemistry: A Journal (2022) Vol. 1: 1-9. DOI: http://dx.doi.org/10.23977/analc.2022.010101.

REFERENCES

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[5] HJ 608-2013. Soil and Sediment Determination of Mercury, Arsenic, Selenium, Bismuth, Antimony Microwave Dissolution/Atomic Fluorescence Spectrometry. Beijing: Environmental Science Press of China.
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