Determination of Contaminated Heavy Metals in Lacquer Thinner

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The aim of this work needed to discover the problem of lacquer thinner products claimed with dissatisfying the quality of coating and color appearance. The trace metals produced cans was focused on release to solvents. The contaminated trace metals including Fe, Sn, Cu, and Zn in lacquer thinner were also determined by atomic absorption spectrometry (AAS). The lacquer thinner samples were simply carbonized to be ashes by furnace muffle at 550°C for 8 hours. The carbonized ashes were then also digested by conventional wet digestion with concentrated nitric acid until a clear solution was archived. Twenty samples of lacquer thinner were achieved from the paint manufacturer. The content of Fe, Sn, Cu, and Zn was found in the range of 0.0631-77.190 mg/kg, ND-12.613 mg/kg, ND-1.4679 mg/kg, and ND-0.4028 mg/kg, respectively. The result of high concentration of Fe related to the appearance of lacquer thinner color. The evidence of released heavy metals in the ashes of lacquer thinner samples was evaluated by X-ray fluorescence technique. The result of this work was concluded that the contaminated trace metals in the suspected lacquer thinner samples were leached from the metallic package.

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Edited by:

Dr. Noppakun Sanpo, Dr. Jirasak Tharajak and Dr. Paisan Kanthang

Pages:

144-148

Citation:

W. Chansuvarn and K. Jainae, "Determination of Contaminated Heavy Metals in Lacquer Thinner", Applied Mechanics and Materials, Vol. 879, pp. 144-148, 2018

Online since:

March 2018

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$38.00

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