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本文根据现用的Abbott法(日本东京都立卫生研究所法)原理进行简化。1.操作步骤试样(餐具)中加入100ml热水,置80℃恒温水浴上搅拌浸出5分钟。将浸出液全部移入分液漏斗中,以酚酞为指示剂,滴加1N NaOH溶液使恰呈红色,然后滴加1 N H_2 SO_4中和至无色。加入亚甲兰溶液10ml,氯仿10ml,激烈振摇3分钟,静置后取氯仿层,在1cm比色杯中干650nm波长下测光密度。以阴离子界面活性剂二-2-乙基己基磺酰琥珀酸酯为标准作标
This article is simplified based on the current Abbott method (Tokyo Metropolitan Institute of Health, Japan). 1. Procedure Add 100ml of hot water to the test sample (tableware) and leave to stir at 80 ° C for 5 minutes. The leachate all moved into the separatory funnel to phenolphthalein as an indicator, dropping 1N NaOH solution just just red, then 1 N H 2 SO 4 neutralized to colorless. Add methylene blue solution 10ml, chloroform 10ml, vigorously shaking for 3 minutes, after standing chloroform layer, in 1cm cuvette dry 650nm wavelength metering density. An anionic surfactant di-2-ethylhexyl sulfonyl succinate as a standard as a standard