Jedrzejczak R
Institute of Agricultural and Food Biotechnology, Department of Food Analysis, Rakowiecka 36, 02-532 Warsaw, Poland.
Food Addit Contam. 2002 Oct;19(10):996-1002. doi: 10.1080/02652030210151912.
Total mercury concentrations were determined in 573 samples of agricultural crops and foods of plant origin which included cereals, fruit and vegetables and their products commercially available on the Polish market. The method of cold vapour atomic absorption spectrometry (CVAAS) after a wet-acid digestion in a closed-vessels and microwave oven was used and the reliability of the procedure demonstrated. Mercury concentrations in the agricultural crops and plant foods were generally below the maximum permissible limits in Poland and rarely exceeded 5 microg x kg(-1). Values ranged from <0.1 to 14 microg x kg(-1), mean 2.4 +/- 2.3 microg x kg(-1) in wheat and rye grains; from <0.1 to 2.4 microg x kg(-1), mean 0.5 +/- 0.4 microg x kg(-1) in nine varieties of vegetables; from <0.1 to 5.1 microg x kg(-1), mean 1.1 +/- 0.9 microg x kg(-1) in seven varieties of fruit; from <0.1 to 5.6 microg x kg(-1) in cereal products and jams; and from <0.1 to 3.0 microg x l(-1) in fruit and vegetable juices, nectars and beverages. The contribution of the mercury in the analysed agricultural crops and foods of plant origin to the weekly dietary intake of total mercury was 8 microg/person, which represents only 3% of the provisional tolerable weekly intake (PTWI) for this metal.
测定了573份波兰市场上可买到的包括谷物、水果、蔬菜及其制品在内的农作物和植物源性食品样本中的总汞浓度。采用了密闭容器和微波炉湿法酸消解后冷蒸气原子吸收光谱法（CVAAS），并证明了该方法的可靠性。农作物和植物性食品中的汞浓度一般低于波兰的最大允许限量，很少超过5微克/千克。小麦和黑麦籽粒中的汞含量范围为<0.1至14微克/千克，平均为2.4±2.3微克/千克；9种蔬菜中的汞含量范围为<0.1至2.4微克/千克，平均为0.5±0.4微克/千克；7种水果中的汞含量范围为<0.1至5.1微克/千克，平均为1.1±0.9微克/千克；谷物制品和果酱中的汞含量范围为<0.1至5.6微克/千克；果汁、花蜜和饮料中的汞含量范围为<0.1至3.0微克/升。所分析的农作物和植物源性食品中的汞对总汞每周膳食摄入量的贡献为8微克/人，仅占该金属暂定每周耐受摄入量（PTWI）的3%。
