Manaka Yumi, Gotoh Masayuki, Kano Katsumi, Asano Yu
Wayo Women's University Graduate School of Human Ecology, Ichikawa-shi, Chiba, Japan.
Nihon Eiseigaku Zasshi. 2011 May;66(3):600-7. doi: 10.1265/jjh.66.600.
The purpose of this research is to clarify the effects of the following treatments on the elution of trace elements: water settling, 2 h boiling of water, acetic acid settling, and 2 h boiling of acetic acid in prebrushed enameled cookware, and the same four treatments after brushing the surface of enameled cookware.
The eluate samples from enameled cookware subjected to the above eight treatments ware obtained, and the concentrations of the fifteen trace elements (B, Al, Cr, Mn, Fe, Ni, Cu, Zn, As, Se, Mo, Cd, Sb, Pb, and U) were simultaneously analyzed by inductively coupled plasma-mass spectrometry (ICP-MS).
The concentrations of the fifteen elements eluted from enameled cookware were low or very low after the treatments. Enameled cookware is made from iron covered with glass containing pigments. The concentrations of Al, Ni, and Sb were significantly higher (p<0.01) in almost all treatments. The concentrations of Fe, which is the base element of enameled cookware, showed almost no change. The safety level for enameled cookware are standardized at 70 ng/mL Cd and 400 ng/mL Pb. The Cd and Pb concentrations in all treatment samples were below these standard levels.
The results of our study and other studies conducted so far suggest that the risk of acute or chronic toxicity associated with the use of enameled cookware under normal circumstances is extremely low and negligible.
本研究旨在阐明以下处理对预刷漆搪瓷炊具中微量元素溶出的影响：水沉降、水煮2小时、乙酸沉降、乙酸煮2小时，以及在搪瓷炊具表面刷漆后进行相同的四种处理。
获取经过上述八种处理的搪瓷炊具的洗脱液样本，并通过电感耦合等离子体质谱法（ICP-MS）同时分析十五种微量元素（硼、铝、铬、锰、铁、镍、铜、锌、砷、硒、钼、镉、锑、铅和铀）的浓度。
处理后，搪瓷炊具中洗脱的十五种元素的浓度较低或非常低。搪瓷炊具由覆盖有含颜料玻璃的铁制成。在几乎所有处理中，铝、镍和锑的浓度显著更高（p<0.01）。搪瓷炊具的基础元素铁的浓度几乎没有变化。搪瓷炊具的安全标准为镉70 ng/mL和铅400 ng/mL。所有处理样品中的镉和铅浓度均低于这些标准水平。
我们的研究结果以及迄今为止进行的其他研究表明，在正常情况下使用搪瓷炊具引起急性或慢性毒性的风险极低，可以忽略不计。
