為瞭解臺灣地區生產之食米中重金屬（鎘、汞、鉛）含量之現況，於96年3月至10月間，由各縣市衛生局至其轄區，包括台北縣、桃園縣、新竹縣（市）、基隆市、宜蘭縣、花蓮縣、台東縣、苗栗縣、台中縣、彰化縣、南投縣、雲林縣、嘉義縣（市）、台南縣、高雄縣、屏東縣等之碾米廠抽樣一、二期作的食米檢體，分別為79件及84件，共163件，送至本局，依行政院衛生署公告方法進行檢驗。檢驗結果，鎘含量總平均值為0.04 ppm（0.002∼0.26 ppm），汞含量總平均值為0.002 ppm（未檢出∼0.012 ppm），鉛含量總平均值為0.03 ppm（未檢出∼0.11 ppm）；第一期作食米檢體，鎘之平均含量為0.04 ppm（0.002∼0.26 ppm），汞之平均含量為0.002 ppm（未檢出∼0.012 ppm），鉛之平均含量為0.03 ppm（未檢出∼0.11 ppm）；第二期作食米檢體，鎘之平均含量為0.03 ppm（0.01∼0.10 ppm），汞之平均含量為0.001 ppm（未檢出∼0.008 ppm），鉛之平均含量為0.03 ppm（0.004∼0.07 ppm）。檢驗結果鎘、汞及鉛含量均未超出行政院衛生署公告之『食米重金屬限量標準』（鎘0.4 ppm以下，汞0.05 ppm以下，鉛0.2 ppm以下）。

In order to survey the contents of heavy metals (cadmium, mercury and lead) in rice in Taiwan, rice samples provided by the rice millers were collected from February to October, 2007. Seventy nine samples of
the first crop rice and eighty four samples of the second crop rice were analyzed. The results showed that the total average content of cadmium, mercury and lead in rice was 0.04 ppm (0.002∼0.26 ppm), 0.002 ppm (N.D.∼
0.0012 ppm) and 0.03 ppm (N.D.∼0.11 ppm), respectively. The average contents of cadmium, mercury and lead for the first crop rice were 0.04 ppm (0.002∼0.26 ppm), 0.002 ppm (N.D.∼0.012 ppm) and 0.03 ppm (N.D.∼
0.11 ppm), respectively. The average contents of cadmium, mercury and lead for the second crop rice were 0.03 ppm (0.01∼0.10 ppm), 0.001 ppm (N.D.∼0.008 ppm) and 0.03 ppm (0.004∼0.07 ppm), respectively. In this
investigation, all rice samples have shown of good safety and under control. The contents of cadmium, mercury and lead in rice were all in compliance with the regulation, set by the Department of Health,Executive Yuan.