Tahvonen R
Laboratory of Food Chemistry, Agricultural Research Centre of Finland, Jokioinen, Finland.
Food Addit Contam. 1998 May-Jun;15(4):446-50. doi: 10.1080/02652039809374665.
The lead and cadmium contents of carbonated beverages, juices, beers and wines were determined by ETAAS using Zeeman background correction, peak height mode and the method of standard additions for quantitation. Other beverages were digested in conc. HNO3, but wines were diluted with 10% HNO3. The lead contents of beverages were negligible. The mean Pb content of juices was 9 micrograms/kg, 2 micrograms/kg in carbonated beverages, < 1 microgram/kg in mineral water and 3 and 4 micrograms/kg in domestic and imported beers. The mean lead content was 16 micrograms/l in domestic miscellaneous wines, 33 micrograms/l in imported white wines, 9 micrograms/l in domestic red wines and 34 micrograms/l in imported red wines. The cadmium contents in all beverages were < 1 microgram/kg, except for domestic red wine made from raspberry, which contained 2 micrograms/l. Beverages contribute only a negligible amount of lead and cadmium to the average Finnish diet. However, as the total lead intake is low in Finland, about 12 micrograms/day, the share of beverages is rather high, about a fifth of the total intake.
采用塞曼背景校正、峰高模式及标准加入法定量，通过电热原子吸收光谱法（ETAAS）测定了碳酸饮料、果汁、啤酒和葡萄酒中的铅和镉含量。其他饮料用浓硝酸消解，但葡萄酒用10%硝酸稀释。饮料中的铅含量可忽略不计。果汁中铅的平均含量为9微克/千克，碳酸饮料中为2微克/千克，矿泉水中<1微克/千克，国产啤酒和进口啤酒中分别为3微克/千克和4微克/千克。国产混合葡萄酒中铅的平均含量为16微克/升，进口白葡萄酒中为33微克/升，国产红葡萄酒中为9微克/升，进口红葡萄酒中为34微克/升。除用覆盆子酿造的国产红葡萄酒含镉量为2微克/升外，所有饮料中的镉含量均<1微克/千克。饮料在芬兰人平均饮食中对铅和镉的贡献微不足道。然而，由于芬兰人铅的总摄入量较低，约为12微克/天，饮料的贡献比例相当高，约占总摄入量的五分之一。
