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The aqueous phase were acidified with sulfuric acid, taken to dryness and extracted with methanol (water soluble acidic fractions) and concentrated for TMS derivatives. 有机相(碱性和中性部分)经浓缩并硅烷化，水相经酸化、吹干、提取(提取物为酸性水溶性部分)并硅烷化。
Petroleum products--Determination of water soluble acids and alkalis 石油产品水溶性酸及碱测定法
water soluble acid 水溶性酸
Water soluble functional vegetable protein. 水溶性植物功能蛋白。
A new water soluble color reagent 1 (5 bromo 2 pyridylazo) 2,7 hydronaphthoquinone 6 sulfonic acid (5 Br PADN S) was synthesized. 报道了水溶性 1－（5－溴－2－吡啶偶氮）－2，7－萘二酚－6－磺酸（5－Br－PADN－S）的制备方法及其分析特性。
A series of water soluble N-maleyl chitosan and N-phthaloyl chitosan was synthesized in an acid homogeneous solution under room temperature. 利用马来酸酐和邻苯二甲酸酐在均相条件下与壳聚糖发生N酰化反应,制备了一系列水溶的N酰化壳聚糖。
A water soluble metal antirusting agent was prepared. 制备了一种水溶性金属防锈剂；
Methylthymol Blue, tetrasodium salt, water soluble, pure... 询价甲基百里香酚蓝(四钠盐)；
Formaldehyde is a water soluble and volatilizable pungent gas. 本课题在上海市11家医院病理科环境中，进行了空气中甲醛浓度水平的监测，对116名病理科医师进行了问卷调查和嗅觉功能、肺功能检测。
It comprises XC polymer, YDC LN additive and water soluble weighting agent. 该体系主要由XC聚合物和YDC -LN助剂以及可水溶性加重剂组成。
Conclusions Chitosan and it s water soluble derivatives have no cytotoxicity. 结论壳聚糖及其水溶性衍生物无细胞毒性。
Water soluble multiwall carbon nanotube has good dispersiveness and stability. 采用柠檬酸钠还原氯金酸制备了金水溶胶，研究了影响金纳米粒子的粒径的相关因素。
Two types of water soluble resin are tested in alkali magnesium olivine sand. 用两种水溶性树脂在碱性镁橄榄石砂上进行了试验。
A method for the determination of arsenic in fumaric acid by HG AFS was developed. The sample was decomposed in sodium hydroxide solution and fumaric acid was transferred into water soluble sodium fumarate. 用氢氧化钠溶液分解富马酸使其转化为水溶性富马酸钠 ,然后用氢化物发生 -原子荧光光谱法测定了试样中的砷。
The deduced amino acid sequence is 77% identical to the gene from Citrus reticulata (GenBank,AF312229), and only 33% identical to the gene from Fragaria ananassa (GenBank AF000521), was suggested to encode a soluble acid invertase. 在GenBank中进行同源性检索的结果表明,该成员编码的氨基酸与植物可溶性酸性转化酶的氨基酸同源性较高,与宽皮柑橘(GenBank登记号AF312229)可溶性酸性转化酶基因编码的氨基酸具有77%25的同源性,而与定位于细胞壁的(不溶性)酸性转化酶同源性较低,最高仅33%25(Fagaria ananassa,GenBank AF000521)。
Water soluble C9 petroleum resin was prepared by radical solution copolymerization with C9 fraction, a by-product from the production of ethylene, and monomers such as maleic anhydride ( MA ) and acylic acid ( AA ). 本文利用乙烯装置副产的C_9馏份,与马来酸酐(MA)、丙烯酸(AA)极性单体共聚,合成出对工业循环水具有阻垢作用的水溶性C_9石油树脂。
In calcareous soil the water soluble phosphate applied was mainly transformed into Ca P,O P and Al P, which in acid soil were mainly changed into Fe P, O P and Al P.Submerg increased Fe P in both soils. 外加磷肥在潮土中主要转化为Ca?P，O?P和Al?P，红壤中则主要转化为Fe?P，Al?P和O?P。
We study the calculation formula and its application of H+concentration in soluble acidic saline solution of tribasic acid(except NH4+ salt) in this paper. 对三元酸易溶酸式盐溶液(铵盐除外)中H+离子浓度的计算公式及公式的应用进行讨论。
Some reactions such as those between soluble acids and bases occur very rapidly. 有些反应，象酸碱溶液之间的反应进行得很快。
The water soluble dispersant agent, which the backbone was sodium cellulose sulfate and sodium lignin sulfonate, was prepared using cane dregs and fuming sulfuric acid as raw material . 以甘蔗渣、发烟硫酸为原料合成了纤维素硫酸钠和木质素磺酸钠为主的水溶性分散剂,同时测定了其表面活性。