The interferences of protein and sulfide in the domestic wastewater are extracted with alkaline methyleneblue, and then the concentration of anionic surfactant is detected by using acid methyleneblue. 采用碱性亚甲蓝萃取去除蛋白质、硫化物等干扰,然后经酸性亚甲蓝萃取法分析未经处理或仅简单处理生活污水中的阴离子表面活性剂浓度。
The anionic waterborne polyurethane was synthesized by the reaction of toluene diisocyanate ( TDI) with polyester glycol and dimethylolpropionic acid ( DMPA) with the process of prepolymerization step by step and self-emulsification. 采用甲苯二异氰酸酯(TDI)、聚酯多元醇和二羟甲基丙酸(DMPA)为主要原料,经分步预聚后在水中自乳化合成了阴离子型水性聚氨酯胶粘剂。
Dispersibility testing and study of it showed that introduction of the cationic group into anionic acrylic acid/ acrylic amide copolymer enhanced its dispersibility remarkably. 通过分散力的测定及研究表明:在阴离子型丙烯酸-丙烯酰胺共聚物中引入阳离子基团,其分散性能得到较大提高;
Carboxymethyl starch anionic flocculant with high degree of substitution and high stability for water treatment was synthesized from starches, sodium hydroxide and chloroacetic acid as raw materials by the internal mixer. 以淀粉、氢氧化钠、氯乙酸为原料,使用密炼机合成了水处理用羧甲基淀粉阴离子絮凝剂。该产品具有高取代度、高稳定性。
A novel anionic coated capillary, polybrene/ polyacrylic acid double coated capillary has been developed by a simple coating procedure. 以阴离子聚合物聚丙烯酸为涂层材料,研制了一种新型的阴离子型毛细管电泳Polybrene/聚丙烯酸双涂层柱。
The hypochromic effect of a trace amount of iron ( III) on the absorbance of anionic sulphonated cyanine at 770 nm was observed in dilute sulfuric acid medium. 在稀硫酸介质中,痕量铁(III)对磺酸基阴离子花菁在770nm处的长波吸收具有明显的减色效应。
The experiments show that K/ S values of such anionic dyes as acid, metallized and direct dyes decrease when the fabric is finished before dyeing, with the value and brilliance improved in the presence of tri-ethanolamine ( TEA). 实验结果表明,织物先整理后染色,则酸性、中性、直接等阴离子染料的K/S值下降,整理浴中加有三乙醇胺(TEA),有助于K/S值、鲜艳度的提高;
The productive and applied present situation of anionic ammonium acid carbonate additive is summarized in this paper. The difference of use result is analyzed from molecular structure and product composition. 综述了反应型阴离子碳铵添加剂的生产应用现状,并从分子结构和产品组成上分析了使用效果差异;
However, the anionic kerosene emulsion made from oleic acid sodium is not good on selectivity in spite of decreasing the cost. 用阴离子型的油酸钠制取的煤油乳化液虽可节约用量,但浮选选择性不好。
An anionic multicomponent copolymer is obtained by copolymerization of sulfo methyl acrylamide ( SAM) synthesized in laboratory, acrylamide ( AM) and acrylic acid ( AA). The effect of synthesizing conditions of copolymer on the properties of drilling fluid treated is discussed. 利用室内合成的磺甲基丙烯酸胺(SAM)与丙烯酰胺(AM)、丙烯酸(AA)共聚制得一种阴离子型多元共聚物,讨论了合成条件对合成共聚物处理泥浆性能的影响。
However, high level of anionic acid in diet could result in poor palatability and finally affected feed intake. Thus, it may be impossible to prevent postpartum fever simply by anionic salts. 但高量阴离子盐类适口性差,对采食量产生不良影响,因此想要地通过添加阴离子盐类来防止产褥热并期望得到应有的效果,有时是不可能的。
Efficiency, effect factors, mechanism of removal anionic dyestuff were discussed in this paper with Mg~ ( 2+) and Al~ ( 3+) co-precipitation to synthesize LDH in-situ to treat acid scarlet GR. 以酸性大红GR为典型代表,初步研究了镁-铝盐水解共沉淀法即时合成层状双氢氧化物(LDH)处理阴离子型染料溶液的效果、影响因素和染料去除机理。
Polyacrylic acid resin No. ⅱ,ⅲ, which graded by Chinese Pharmacopoeia are anionic methacrylic acid copolymer, is not easy to gastric juice, intestinal juice soluble only. 我国药典规定牌号为聚丙烯酸树脂Ⅱ、Ⅲ号属于阴离子型甲基丙烯酸共聚物,不溶于胃液,只溶于肠液。