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采用火焰原子吸收法测定了生活饮用水经不同餐具煮沸后金属元素K、Na、Ca、Mg含量的变化，结果显示．自来水在煮沸20min后，4种金属元素含量均明显升高，而以经铝制高压锅和搪瓷锅煮后水中元素含量升高最明显，而以经铁锅煮后水中元素含量升高最低，但各元素含量均在正常范围之内，长期饮用不会对健康产生明显影响。
The changes of K, Na, Ca and Mg contents in drinking water after boiling different tablewares were determined by flame atomic absorption spectrometry. The tap water boiled 20min, the four kinds of metal elements were significantly increased, but to aluminum by the pressure cooker and enamel pot after the most significant increase in water content of the elements, and to iron after cooking the lowest increase in water element content, but The content of the elements are within the normal range, long-term consumption will not have a significant impact on health.