In:
Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam, Vietnamese Journal of Food Control, National Institute for Food Control, Vol. 5, No. 3 ( 2022-09-24), p. 443-450
Abstract:
The content of cadmium (Cd), lead (Pb) was determined in butterfly pea flower & nbsp;samples by atomic absorption Spectrophotometer (AAS). Method validation was evaluated & nbsp;through of parameters such as linear range, the limit of detection (LOD), the limit of & nbsp;quantitation (LOQ), recovery, repeatability, and intermediate precision. The validation & nbsp;results showed that the LOD of Cd, Pb were 1.20 and 6.20 & mu;g/kg, respectively, while the & nbsp;LOQ of Cd and Pb were 4.01 and 20.5 & mu;g/kg, respectively. The recovery of Cd is 96 - 98% & nbsp;and Pb is 98 - 100%. The relative repeat standard deviation (RSDr) of Cd, Pb is in the range & nbsp;of 1.50 - 2.50% and 1.90 - 2.13%, respectively. Meanwhile, the intermediate precision of & nbsp;Cd, Pb is 2.02% and 1.97%, respectively. The working range of the method is 0.2 - 4 & mu;g/L & nbsp;(Cd) and 3 - 30 & mu;g/L (Pb) with the standard curve equations having the correlation coefficient & nbsp;R2 & ge; 0.995. The quantitative method of Cd, Pb by atomic absorption Spectrophotometer is & nbsp;accurate and highly reliable, used to analyze butterfly pea flower samples collected in Cai & nbsp;Rang district, Can Tho city. & nbsp;
Type of Medium:
Online Resource
ISSN:
2615-9252
DOI:
10.47866/2615-9252/vjfc.3963
Language:
Unknown
Publisher:
Vietnamese Journal of Food Control, National Institute for Food Control
Publication Date:
2022
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