Srathonghon W.,Khon Kaen University |
Laohasiriwong W.,Khon Kaen University |
Pitaksanurat S.,Khon Kaen University |
Nathapindhu G.,Khon Kaen University |
And 4 more authors.
EnvironmentAsia | Year: 2016
This cross-sectional analytical study aimed to determine the blood levels of cadmium (B-Cd) and mercury (B-Hg) and identify the factors influencing heavy metal accumulation in residents of agro-industries along the Nam Phong River. Quantitative data were collected, and systematic random sampling was used to obtain 420 samples for questionnaire interview and serum heavy metal testing for B-Cd and B-Hg. Multiple regression analysis was used to identify factors influencing the accumulation of heavy metals in the population and report mean differences, 95% confidence intervals and p-values. The results indicated that B-Cd levels were within the recommended safety limits for human health (5 μg/dL). However, 4.29% of respondents had Hg levels higher than the recommended safety limits for human health (10 μg/dL). Factors influencing Cd levels included sex (mean difference=0.13 μg/L, 95% CI: 0.03-0.24, p-value=0.02) and smoking (mean difference=0.14 μg/L, 95% CI: 0.09-0.19, p-value<0.001). Factors influencing Hg levels included smoking (mean difference=1.06 μg/L, 95% CI: 0.52-1.61, p-value<0.001), fish consumption (mean difference=1.11 μg/L, 95% CI: 0.22-2.01, p-value=0.01) and river snail consumption (mean difference=0.56 μg/L, 95% CI: 0.03-0.19, p-value=0.03). © 2007, Thai Society of Higher Eduation Institutes on Environment. All Rights Reserved.