Determination of total boron in soils by inductively coupled plasma atomic emission spectrometry using microwave‐assisted digestion
作者:
Da‐hai Sun,
JamesK. Waters,
ThomasP. Mawhinney,
期刊:
Communications in Soil Science and Plant Analysis
(Taylor Available online 1998)
卷期:
Volume 29,
issue 15-16
页码: 2493-2503
ISSN:0010-3624
年代: 1998
DOI:10.1080/00103629809370127
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
A method is described in which total soil boron (B) was determined by inductively coupled plasma atomic emission spectrometry (ICP‐AES). The method is based on microwave‐assisted digestion of soil samples with nitric acid (HNO3), hydrofluoric acid (HF) and hydrogen peroxide (H2O2). Excess HF was eliminated by adding silicon (IV) oxide (SiO2). The B 208.959 nm line was chosen as the analytical line to avoid the spectral interferences of iron (Fe). A detection limit of 0.0045 mg L‐1was obtained with the selected analytical line under the optimized operating conditions. Four National Institute of Standards and Technology (NIST) standard reference materials (three soils and one river sediment) and four different type of practical soils were analyzed to test the reliability of the method. The total B concentration in selected samples ranged from 19 to 76 mg kg‐1. The excellent recoveries of the spike (98.5–101%) indicate that the proposed procedure is effective and feasible for the determination of total B in soils.
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