Ray W J, Puvathingal J M
Anal Biochem. 1985 May 1;146(2):307-12. doi: 10.1016/0003-2697(85)90544-5.
Commercial samples of polyethylene glycol as well as detergents incorporating the polyoxyethylene linkage may contain substantial concentrations of peroxides and aldehydes, as well as aldehyde precursors. Facile procedures for essentially eliminating either the first or all three of these contaminants from concentrated aqueous stock solutions are described. Under some conditions, the purified solutions can be stored at room temperature under aerobic conditions for time periods of weeks without significant decomposition. Possible antioxidants that might be used under other conditions to stabilize such solutions during long-term aerobic studies are considered.
聚乙二醇的商业样品以及含有聚氧乙烯键的洗涤剂可能含有大量的过氧化物、醛类以及醛类前体。本文描述了从浓缩的储备水溶液中基本去除这三种污染物中的第一种或全部三种的简便方法。在某些条件下，纯化后的溶液可以在有氧条件下于室温储存数周而不会有明显分解。还考虑了在其他条件下可能用于在长期有氧研究期间稳定此类溶液的潜在抗氧化剂。
