scholarly journals The dry ashing - AAS method and the microwave digestion -ICP-MS method for determination of lead in plastic packaging bag

Author(s):  
Haipeng Mi ◽  
Xilin Zhou ◽  
Bo Liang ◽  
Zhonghua Su ◽  
Qingqing Huang ◽  
...  
2004 ◽  
Vol 514 (1) ◽  
pp. 115-124 ◽  
Author(s):  
Jie Wang ◽  
Tetsuya Nakazato ◽  
Kinya Sakanishi ◽  
Osamu Yamada ◽  
Hiroaki Tao ◽  
...  

Talanta ◽  
2019 ◽  
Vol 199 ◽  
pp. 228-237 ◽  
Author(s):  
Stanislas Grassin-Delyle ◽  
Marie Martin ◽  
Ons Hamzaoui ◽  
Elodie Lamy ◽  
Christophe Jayle ◽  
...  

1977 ◽  
Vol 60 (5) ◽  
pp. 1170-1174
Author(s):  
Duane R Boline ◽  
W G Schrenk

Abstract An atomic absorption spectroscopic (AAS) method is described for the determination of copper and iron by direct aspiration of a solution of an ashed sample in an alcohol-water mixture. The method has been applied to samples containing 2.0–31.9 μg Cu/g and 15.5–196 Fe/g. Operating conditions for using an acetylene-air flame have been established. The hollow cathode current needed to be carefully controlled for the copper analysis. No significant interference was noted from other elements commonly present in plants. Wet and dry ashing procedures provided comparable results. Recovery of added amounts of copper and iron ranged from 92 to 101% and 94 to 104%, respectively; most results were near 100%. The official AOAC colorimetric methods and the AAS method were compared and were comparable in reliability and accuracy. The AAS method is simpler and faster.


Author(s):  
BeiLei Wu ◽  
ZhenXin Wang ◽  
JiaMei Ye ◽  
ZhenXing Lin ◽  
Hao Wang ◽  
...  
Keyword(s):  

2015 ◽  
Vol 98 (4) ◽  
pp. 953-961 ◽  
Author(s):  
Stephane Dubascoux ◽  
Marine Nicolas ◽  
Celine Fragniere Rime ◽  
Janique Richoz Payot ◽  
Eric Poitevin

Abstract A single-laboratory validation (SLV) is presented for the simultaneous determination of 10 ultratrace elements (UTEs) including aluminum (Al), arsenic (As), cadmium (Cd), cobalt (Co), chromium (Cr), mercury (Hg), molybdenum (Mo), lead (Pb), selenium (Se), and tin (Sn) in infant formulas, adult nutritionals, and milk based products by inductively coupled plasma (ICP)/MS after acidic pressure digestion. This robust and routine multielemental method is based on several official methods with modifications of sample preparation using either microwave digestion or high pressure ashing and of analytical conditions using ICP/MS with collision cell technology. This SLV fulfills AOAC method performance criteria in terms of linearity, specificity, sensitivity, precision, and accuracy and fully answers most international regulation limits for trace contaminants and/or recommended nutrient levels established for 10 UTEs in targeted matrixes.


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