Method validation and determination of heavy metals in cocoa beans and cocoa products by microwave assisted digestion technique with inductively coupled plasma mass spectrometry

2020 ◽  
Vol 303 ◽  
pp. 125392 ◽  
Author(s):  
Rahmat Mohamed ◽  
Badrul Hisyam Zainudin ◽  
Abdul Syukor Yaakob
Keyword(s):  
Heavy Metals ◽  
Inductively Coupled Plasma ◽  
Cocoa Beans ◽  
Inductively Coupled ◽  
Microwave Assisted ◽  
Cocoa Products ◽  
Digestion Technique ◽  
Plasma Mass Spectrometry ◽  
Microwave Assisted Digestion

Determination of Arsenic, Chromium, Lead, Manganese, and Mercury in Certifiable Color Additives by Inductively Coupled Plasma/Mass Spectrometry

2015 ◽  
Vol 98 (1) ◽  
pp. 160-164 ◽  
Author(s):  
Nancy Morris Hepp
Keyword(s):  
Mass Spectrometry ◽  
Sample Preparation ◽  
Quantitative Determination ◽  
Inductively Coupled Plasma ◽  
Inductively Coupled ◽  
Microwave Assisted ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Microwave Assisted Digestion

Abstract Specifications in the Code of Federal Regulationslimit the levels of As, Pb, and Hg in most certifiable color additives, and some have additional specification limits for Cr and Mn. A new ICP/MS method wasdeveloped and validated for the quantitative determination of these elements in various certifiable color additives. One dissolution and two microwave-assisted digestion sample preparation procedures were optimized to address initial low Hg and enhanced As recoveries. Results using the three sample preparation procedures were generally equivalent for all of the elements determined. LOQ values were 0.3 mg/kg for As, 0.7 mg/kg for Cr, 0.4 mg/kg for Pb, 0.7 mg/kg forMn, and 0.1 mg/kg for Hg.

Sign in / Sign up

Export Citation Format

Share Document