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Citation: LU Jian-Ping, PENG Jian, WANG Yi-Lin, SHI Jian-Rong, CAO Jia-Xing. Indirect Determination of Trace Boron and Phosphorus in Steel by Flame Atom Absorption Spectrometry[J]. Chinese Journal of Applied Chemistry, ;2008, 25(6): 710-713. shu

Indirect Determination of Trace Boron and Phosphorus in Steel by Flame Atom Absorption Spectrometry

1.
a College of Chemical Engineering and Chemistry of Guangxi University, Nanning 530004;
2.
b China Antimony Chemicals Co.Ltd, Nanning

Corresponding author: LU Jian-Ping,
Received Date: 11 June 2007
Available Online: 30 October 2007
Fund Project: 广西大学科研基金资助项目(X051108) (X051108)

The indirect determination of boron and phosphorus in steel was invesgitated by flame atom absorption spectrometry (FAAS) method with extraction.1,2-Dichloroethane was used to extract the associate consisting of borax,phenylhydroxyacetic acid and[Fe(phen)₃]²⁺ in a weak acid,then Fe of the associate was stripped with water.Methyl isobutyl ketone was used for extracting phosphomolybdate complex in the acid.The content of boron and phosphorus was investigated in steel samples by determining the amount of iron in the water phase and molybdenum in organic phase by flame atom absorption spectrometry.The dynamic calibration curves of boron and phosphorus were obtained within 0.04~1.00 mg/L and 0.12~3.24 mg/L respectively.The limits of detections are 0.036 mg/L for boron and 0.015 mg/L for phosphorus.This method has the advantages of simple operation,good selectivity and low detection limit,showing a good potential to determine trace boron in steel.
- spectrometric method,
- steel,
- boron,
- phosphorus
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