Simultaneous determination of arsenic, bromine, iodine in coal and coke by inductively coupled plasma-mass spectrometry with microwave digestion | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

6670609

Reference Type

Journal Article

Title

Simultaneous determination of arsenic, bromine, iodine in coal and coke by inductively coupled plasma-mass spectrometry with microwave digestion

Author(s)

Gao Yun-Chuan; Gao Qin-Fen; Sun Ming-Xing; Zhu Zhi-Xiu; Chen Zong-Hong; ,

Year

2007

Is Peer Reviewed?

Yes

Journal

Chinese Journal of Analytical Chemistry / Fen Xi Hua Xue
ISSN: 0253-3820

Publisher

ELSEVIER SCIENCE INC

Location

NEW YORK

Page Numbers

1175-1178

Web of Science Id

WOS:000250426600019

Abstract

Using high pressure and closed microwave digestion technology, the imports and exports coal and coke samples from different countries were digested quickly by mixed acids of nitric acid, hydrofluoric acid and hydrogen peroxide solution, a method for simultaneous determination of trace elements, such as arsenic, bromine, and iodine, in coal and coke by ICP-MS was established. The influence of medium of nitric acid and other acids on determined elements was researched. The unstable mass signal of bromine and iodine on account of different valence can be stabled by adding sodium persulfate. And the silver Ion can catalyse and accelerate the reaction mentioned above. High memory effect of halogen was effectively decreased by washing with neutral mixed lotion. The low detection limits are in the range of 0.1 - 5.0 mu g/L with relative standard deviations of 1.5% - 12.0% and the recoveries are in the range of 80% - 106.7%. The analysis results are satisfied.