Understanding the effects of potassium ferricyanide on lead hydride formation in tetrahydroborate system and its application for determination of lead in milk using hydride generation inductively coupled plasma optical emission spectrometry

2015 ◽  
Vol 853 ◽  
pp. 179-186 ◽  
Author(s):  
Biyang Deng ◽  
Xiangshu Xu ◽  
Yan Xiao ◽  
Pingchuan Zhu ◽  
Yingzi Wang
Keyword(s):  
Inductively Coupled Plasma ◽  
Hydride Generation ◽  
Optical Emission ◽  
Potassium Ferricyanide ◽  
Optical Emission Spectrometry ◽  
Emission Spectrometry ◽  
Inductively Coupled ◽  
Hydride Formation ◽  
Plasma Optical Emission Spectrometry

Determination of Trace Arsenic Content in Commercial Crispbread by Hydride Generation Inductively Coupled Plasma Optical Emission Spectrometry

2015 ◽  
Vol 68 (3) ◽  
pp. 441 ◽  
Author(s):  
Maja Welna
Keyword(s):  
Inductively Coupled Plasma ◽  
Hydride Generation ◽  
Optical Emission ◽  
Optical Emission Spectrometry ◽  
Emission Spectrometry ◽  
Arsenic Content ◽  
Inductively Coupled ◽  
As Species ◽  
Plasma Optical Emission Spectrometry

Methodology for the determination of total As in crispbread by hydride generation inductively coupled plasma optical emission spectrometry (HG–ICP–OES) was evaluated. The effect of pre-reduction reagents before the HG reaction under conditions of real samples was investigated. Sonication (15 min, 25°C) of samples with aqua regia allowed complete release of As species in solutions. Arsenic hydride was generated in the reaction with NaBH4 (1.0 % (m/v)) after the pre-reduction of AsV to AsIII with ascorbic acid (1.5 % (m/v)) and KI (0.5 % (m/v)) in 3 mol L–1 HCl. Detection limits (LODs) of 0.46 (AsIII) and 0.49 (AsV) μg L–1 were assessed. The accuracy of the method was confirmed by analysis with a certificate reference material and recovery test. Various crispbreads (wheat, rye, corn, rice) were analysed with the developed procedure and As content varied between 0.027 and 0.219 μg g–1, being the highest in the rice samples.

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