Contaminated Heavy Metals in Rice of Surin Province, Thailand

Napaporn Kheangkhun; Jutamart Sringam; Waraporn Kumpinit; Amnauy Wattanakornsiri; Pongthipun Phuengphai

doi:10.14456/nujst.2020.6

Authors

Napaporn Kheangkhun Program of Science, Department of Fundamental Science, Faculty of Science and Technology, Surindra Rajabhat University, Surin, 32000, Thailand
Jutamart Sringam Program of Science, Department of Fundamental Science, Faculty of Science and Technology, Surindra Rajabhat University, Surin, 32000, Thailand
Waraporn Kumpinit Program of Science, Department of Fundamental Science, Faculty of Science and Technology, Surindra Rajabhat University, Surin, 32000, Thailand
Amnauy Wattanakornsiri Program of Environmental Science, Department of Agriculture and Environment, Faculty of Science and Technology, Surindra Rajabhat University, Surin, 32000, Thailand
Pongthipun Phuengphai Program of Chemistry, Department of Fundamental Science, Faculty of Science and Technology, Surindra Rajabhat University, Surin, 32000, Thailand

DOI:

https://doi.org/10.14456/nujst.2020.6

Keywords:

Jasmine rice, Black rice, Germinated brown rice, Heavy metal

Abstract

The purposes of this research were to investigate the types and quantities of contaminated heavy metals in rice, and to compare the heavy metals contaminated in jasmine rice, black rice and germinated brown rice in Surin province, Thailand, with the total of 15 rice samples. The experiment was performed using atomic absorption spectroscopy technique. The results showed that all rice samples had the amount of chromium in the range of 0.248-0.660 mg/kg. However, the detected amounts did not exceed the highest standard of chromium in cereal agricultural products according to the national standards of People's Republic of China defined as 1.00 mg/kg. In addition, the amount of lead in the samples was not found, which the highest standard of lead given by European Communities and Food Standard Australia and New Zealand was defined as not more than 0.2 mg/kg. Therefore, all the rice samples used in this research were considered at safety level for consumption. This basic information is useful for consumers taking consideration to consume rice of Surin province safely.

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