Abstract：The accurate determination of total acidity of acid etching solution and bleaching solution for acid etching detection of gear has important significance to decide that whether the acid etching solution and bleaching solution for acid etching detection of gear can be further used or not. 10mL of saturated sodium oxalate solution was added to effectively mask the Fe2+ and Fe3+. The sample solution was titrated with 0.5mol/L sodium hydroxide standard titration solution. The first equivalent point (EP1) in titration process was selected as the titration endpoint, realizing the determination of total acidity of acid etching solution and bleaching solution for acid etching detection of gear by potentiometric titration. The total acidity of acid etching solution and bleaching solution (unused, used for 7d and used for 14d) was determined according to the experimental method. The recovery tests were also performed. The results showed that the relative standard deviations (RSD, n=6) of three samples were all less than 1.0%. The recoveries were 99%-102% and 98%-102%, respectively. The total acidity of acid etching solution and bleaching solution for acid etching detection of gear (used for 14d) was determined by the experimental method and manual acid-base titration, and the found results were basically consistent.
刘守江. 电位滴定法测定齿轮酸蚀检测用酸蚀液、漂白液总酸度[J]. 冶金分析, 2018, 38(1): 58-63.
LIU Shou-jiang. Determination of total acidity in acid etching solution and bleaching solution for gear acid etching detection by potentiometric titration. , 2018, 38(1): 58-63.
孙胜伟,宋亚虎,刘铁山,等.20CrMnMo钢渗碳齿轮磨削裂纹成因分析[J].理化检验:物理分册,2016,52(2):117-120.SUN Sheng-wei,SONG Ya-hu,LIU Tie-shan,et al.Causes analysis on grinding cracks of 20CrMnMo steel carburized gears[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2016,52(2):117-120.
[2]
宋亚虎,孙胜伟,刘铁山,等.磁弹法在线监测渗碳齿轮的磨削烧伤[J].理化检验:物理分册,2015,51(12):853-857.SONG Ya-hu,SUN Sheng-wei,LIU Tie-shan,et al.Online detecting carburized gear grinding burn by magnetoelastic method[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2015,51(12):853-857.
[3]
孔德群,孔新建.18CrNiMo7-6钢齿轮磨削烧伤裂纹分析[J].金属加工:热加工(MV Metal Form),2016(19):20-24.
蔡璐,胡正阳,李海栋,等.自动电位滴定法测定冷轧薄板酸洗液中总酸度[J].中国无机分析化学,2013,3(1):44-46.CAI Lu,HU Zheng-yang,LI Hai-dong,et al.Determination of total acidity of acidic washing solution for cold-rolled thin sheet by automatic potentiometric titration method[J].Chinese Jorunal of Inorganic Analytical Chemistry,2013,3(1):44-46.
[9]
李艳霞,谢东坡,任凯.自动电位滴定法在果蔬汁饮料总酸度测定中的应用[J].安徽农业科学,2009,37(36):18155-18156,18261.LI Yan-xia,XIE Dong-po,REN Kai.Application of automatic porentionmetric titration determination of total acidity in fruit and vegetable juices[J].Journal of Anhui Agricultural Sciences,2009,37(36):18155-18156,18261.
[10]
李超群,田宗平,曹健,等.游离酸测定过程中金属离子水解干扰和配位剂掩蔽的探讨[J].冶金分析,2016,36(5):69-75.LI Chao-qun,TIAN Zong-ping,CAO Jian,et al.Discussion on the hydrolysis interference of metallic ion and masking of coordination agent in measurement of free acid[J].Metallurgical Analysis,2016,36(5):69-75.
[11]
Graham T T Gibson,Mark F Mohamed,Alexei A,et al.Potentiometric titration of metal ions in ethanol[J].Inorganic Chemistry,2006,45(19):7891-7902.
[12]
詹柏熙.硝酸铁溶液中游离酸的测定[J].四川化工与腐蚀控制(Sichuan Chemical Industry),1998,1(1):25-26.
