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2008•Chinese Journal of Spectroscopy LaboratoryRequires access

Determination of 12 Metal Elements in Melastoma Dodecandrum Lour by Flame Atomic Absorption Spectrophotometry(FAAS)

Wu Dong

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Abstract

The amounts of Na,K,Mg,Ca,Fe,Co,Ni,Cu,Zn,Mn,Cd,Pb in Melastoma dodecandrum lour were determined by FAAS after digestion with HNO3∶HClO4(4+1) at 90℃—95℃ and at normal pressure.The parameters in FAAS were studied.The analytical results of Na,K,Mg,Ca,Fe,Cu,Zn,Mn,Cd were 33.88,3444.54,328.54,1924.76,56.65,1.88,2.97,1.59, 2.99mg·100g -1 respectively,and Co,Ni,Pb were not found in the samples. The recovery of standard addition is 98.16%—103.6% with the relative standard deviation(n=9) of 0.21%? ?.22%. The method is fast,simple and convenient.The results are satisfactory.

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What this paper is about

The amounts of Na,K,Mg,Ca,Fe,Co,Ni,Cu,Zn,Mn,Cd,Pb in Melastoma dodecandrum lour were determined by FAAS after digestion with HNO3∶HClO4(4+1) at 90℃—95℃ and at normal pressure.The parameters in FAAS were studied.The analytical results of Na,K,Mg,Ca,Fe,Cu,Zn,Mn,Cd were 33.88,3444.54,328.54,1924.76,56.65,1.88,2.97,1.59, 2.99mg·100g -1 respectively,and Co,Ni,Pb were not found in the samples. The recovery of standard addition is 98.16%—103.6% with the relative standard deviation(n=9) of 0.21%? ?.22%. The method is fast,simple and convenient.The results are satisfactory.

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Available abstract

The amounts of Na,K,Mg,Ca,Fe,Co,Ni,Cu,Zn,Mn,Cd,Pb in Melastoma dodecandrum lour were determined by FAAS after digestion with HNO3∶HClO4(4+1) at 90℃—95℃ and at normal pressure.The parameters in FAAS were studied.The analytical results of Na,K,Mg,Ca,Fe,Cu,Zn,Mn,Cd were 33.88,3444.54,328.54,1924.76,56.65,1.88,2.97,1.59, 2.99mg·100g -1 respectively,and Co,Ni,Pb were not found in the samples. The recovery of standard addition is 98.16%—103.6% with the relative standard deviation(n=9) of 0.21%? ?.22%. The method is fast,simple and convenient.The results are satisfactory.

Key concepts: Chemistry, Relative standard deviation, Atomic absorption spectroscopy, Standard addition, Metal, Analytical Chemistry (journal), Digestion (alchemy), Nuclear chemistry

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