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文献和实验冷藏酸浸 hydrochloric acid treatmentafter refrigeration
简称为冷浸。是家蚕卵人工孵化法的一种。是在家蚕产卵5— 12周后以收蚁为目的而进行的。产卵后约经 48小时,即从蚕卵显出小豆色时开始,在 5℃中冷藏 4— 12周,按照预定的收蚁日期取出,放于比重 1.100( 20%) 47— 48℃的盐酸中,浸 4— 6分钟,然后在流功的水中,充分脱酸、晾干,着手催青。
The pararosanilin is dissolved in the distilled water and the hydrochloric acid is added. The solution is heated gently, cooled, filtered and stored in aliquots in a refrigerator. B) Sodium Nitrite Sodium nitrite 2g Distilled water 50
Analysis of 2,4-Dichlorophenoxyacetic Acid and 2-Methyl-4-Chloro-Phenoxyacetic Acid in Human Urine
Two methods for the quantitative analysis of 2,4-dichlorophenoxyacetic acid (2,4-D) and 2-methyl-4-chlorophenoxyacetic acid (MCPA) in urine are reported. Hydrochloric acid, sodium chloride, and internal standards (2,3-dichlorophenoxyacetic
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