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- Keywords ? (6 methoxy benzothiazolyl) azo] 1;8 dihydroxynaphthalene 3;6 disulfonic acid(CH 3O BTCA);spectrophotometry;titanium; 甲氧基-苯并噻唑)-偶氮]-1`8-二羟基萘-3`6-二磺酸;分光光度法;钛;
- This method has several advantages: manipulation is simple and safe, and less interference in comparison with phenol disulfonic acid method. 与常用的酚二磺酸比色法相比,该方法具有简便、安全的优点,干扰少、准确度高。
- A sensitive chromogenic reagent,2-(4-chloro-2-phosphophenylazo)-7-(2,4-dichlorophenylazo)-1,8-dihydroxy-3,6-naphthalene disulfonic acid(abbreviation:DC-CPA),has been used in the spectrophotometric determination of bismuth. 研究了2-(4-氯-2-膦酸基苯偶氮)-7-(2;4-二氯苯偶氮)-1;8-二羟基-3;6-萘二磺酸(DC-CPA)与铋的显色反应.
- The reduction of 4,4'-dinitrostilbene-2,2'-disulfonic acid (DNS) by zero-valant iron is one of the most widely used methods to produce the intermediate of 4,4'-diaminostilbene-2,2'- disulfonic acid (DSD). 4,4’-二硝基二苯乙烯-2,2’-二磺酸(DNS)的零价铁还原是目前广泛应用于生产精细化工中间体4,4’-二氨基二苯乙烯-2,2’-二磺酸(DSD)的传统方法。
- phenol disulfonic acid spectrophotometry 酚二磺酸分光光度法
- dinitro naphthalene disulfonic acid 二硝基萘二磺酸
- SPADNS sulfo phenyl azo dihydroxy naphthalene disulfonic acid 磺苯基偶氮二羟基萘二磺酸
- spectrophotometric method with phenol disulfonic acid 酚二磺酸光度法
- There is no parking between 9 am and 6 pm. 上午9时至下午6时禁止停放机动车辆。
- The class needs a minimum of 6 pupils to continue. 这个班最低限度要六个学生才可以继续办下去。
- Keywords diaminostilbene disulfonic acid;leather dye;coupling reaction; 二氨基茋二磺酸;偶联反应;皮革染料;
- If you subtract 2 from 8, you get 6. 8减去2是6。
- Visiting time in this hospital is from 4 to 6. 这家医院的探望时间是从4点到6点。
- The library is open from 9 to 6. 那个图书馆从上午9点到下午6点开放。
- He gave me a taste of his acid wit. 他让我尝到了他敏锐尖刻之机智的滋味。
- It's due in (ie It should arrive) at 6 o'clock. 这班车应在6点钟到达。
- Acid irritates the stomach lining. 酸能刺激胃黏膜。
- The builder cost out the job at$6,500. 营造商给这活儿估价为6,500美元。
- The doors were numbered 2,4, 6 and 8. 这些门编为2、 4、 6、 8号。
- Acid had pitted the surface of the silver. 酸把银器的表面腐蚀了。