Analyzing the difference between atomic fluorescence spectrometry and ICP-MS in the determination of arsenic in urine / 中国职业医学
China Occupational Medicine
; (6): 421-2022.
Article
in Zh
| WPRIM
| ID: wpr-965124
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WPRO
ABSTRACT
@#Abstract Objective ( ) To compare the measured results of arsenic in urine by atomic fluorescence spectrometry AFS and - ( - ), Methods inductively coupled plasma mass spectroscopy ICP MS and analyze the reasons of the difference. The samples WS/T 474-2015 Determination of Arsenic in Urine by Hydride Generation Atomic Fluorescence were pretreated according to Spectrometry, ( ∶ ∶ ∶∶ ,V/V/V) and digested with mixed acid nitric acid sulfuric acid perchloric acid=3 1 1 and then determined by - - AFS and ICP MS. The samples were diluted with 0.50% nitric acid and determined by ICP MS. The samples included urine , , ( arsenic quality control samples inorganic arsenic supplemented samples and organic arsenic arsenic choline and arsenic ) - betaine supplemented samples. Standard curve method was used to compare the results of AFS method and ICP MS method. Results ( ) ( ) The results of quality control samples by AFS method digestion and ICP-MS method without digestion were , - within the range of reference values but the values obtained by AFS method were lower than those obtained by ICP MS method. - - - , The recovery of AFS and ICP MS was 97.79% 100.82% and 99.55% 99.98% respectively. In the middle and high , - ( P ) concentration groups the measured values of inorganic arsenic by AFS were lower than that by ICP MS all <0.01 . The ( ) - recovery of arsenic betaine and arsenic choline by AFS method digestion was only 2.17% 2.63%. The values of arsenic betaine ( ) - ( and arsenic choline measured by AFS method digestion were lower than those measured by ICP MS method without ) - ( )( P )Conclusion digestion and ICP MS method digestion all <0.01 . The result of urine arsenic measured by AFS method - , was lower than that measured by ICP MS method which may be related to the mixed acid digestion of AFS method. Keywords ; - ; ; ; ; ;
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Language:
Zh
Journal:
China Occupational Medicine
Year:
2022
Type:
Article