Experimental study on the air cleaner's purification effect for indoor formaldehyde, ammonia and TVOC 空气净化器对室内甲醛(FORMALD)、氨气和tvoc净化效果的实验研究
Sulfur dioxide and formaldehyde both produce irritation. 二氧化硫和甲醛(FORMALD)都可产生刺激。
The methed is improved for measuring formaldehyde in air by the method of pararosaniline hydrochloride using toxic mercury reagent. 盐酸副玫瑰苯胺法测定空气中甲醛(FORMALD),使用了有毒的汞试剂,为此对该法进行了改进。
By melamine modifying urea-formaldehyde resin, the boiling-water resistance is improved and the free formaldehyde content decreased. 用三聚氰胺改性脲醛树脂改善了胶粘剂的耐沸水性,并有效地降低了游离甲醛(FORMALD)含量。
Objective : to explore the mensuration of formaldehyde and sodium formaldehyde sulfoxylate for food. 目的:探讨食品中甲醛(FORMALD)和吊白块的测定方法。