경남 일원의 논흙 및 쌀 중의 중금속

Heavy metals in the rice and rice paddy soil of Kyung Nam district

1. 쌀 중의 구리 함량은 $0.62{\sim}2.59ppm$으로써 울주산에서 최고 함량이 검출되었다. 2. 납은 $0.06{\sim}0.2ppm$의 범위이며, 최고치는 진양산이었다. 3. 아연은 $0.11{\sim}0.61ppm$으로 진양산이 가장 높은 함량을 나타내었다. 4. 카드뮴은 시료 중 4개소만 검출되었고 0.004 ppm이하로 나타났었다. 5. 수은은 시료 중 6개가 검출되었으며 0.008ppm이하이었다. 6. 논흙과 쌀의 중금속 함량비는 구리에서 6:1, 납 14:1, 아연 56:1이고 카드뮴과 수은은 미량으로 나타났었다.

Heavy metals in the rice and rice paddy soil of Kyung Nam district were surveyed by use of MIBK extraction and atomic absorption spectrophotomter. Mercury was analyzed by nom-flame mercury vapor method. Rice paddy soil showed that cupper amounted to the level of $13.8{\sim}8.4ppm$, average value of 11.5ppm. Lead: $2.6{\sim}0.6ppm$, average 0.02ppm. The conentration of heavy metal $0.04{\sim}0.01ppm$, average 1.5 ppm, Zinc ; $16.1{\sim}7.2ppm$, average 11.3 ppm. Cadmium in rice were containted $2.59{\sim}0.16ppm$ of cupper, average value of 1.80 ppm. Lead: $0.2{\sim}N.D$, Zinc ; $0.11{\sim}0.60ppm$. Cadmium was shown trace at 4 places and mercury was shown trace at 6 places. Cupper showed the highest ratio of heavy metal. Levels in rice and soil whereas zinc showed the highest transmission from soil to rice.