海水和大气中挥发性硫化物分测定硫专用柱HH一sulfide-III
海水和大气中挥发性硫化物分测定硫专用柱HH一sulfide-III 详细信息：
名称：硫化物专用柱
固定相：专用
规格：3m*3mm
型号：HH一sulfide-III
应用：硫化氢，羰基硫，二硫化碳，噻吩，甲硫醚，甲硫醇，乙硫醇，乙硫醚，二甲er硫等9种硫化物的测定
浩瀚色谱（山东）应用技术开发有限公司建立了大气和海水中挥发性硫化物的气相色谱分析方法,确定了zui佳实验条件。为了适应不同的基质和保存方式,大气和海水样品采用了不同的分析方法。测定大气样品时,采用大气采样罐及三级冷阱预浓缩气相色谱-质谱联用技术,而海水样品采用吹扫捕集-气相色谱测定。本方法测定大气挥发性硫化物的线性范围较好,精密度为7.7%~15.1%,检出限为0.23~4.7 ng;海水中挥发性硫化物的精密度为3.5%~5.3%,检出限为2.5~3.5 ng。将本方法用于青岛近海海水和大气中硫化物的测定,测得海水中羰基硫、二jia基硫和二硫化碳的平均浓度分别为(268±58)pmol/L、(1264±0.2)pmol/L、(19±2)pmol/L,大气中的平均浓度为543±39、39±9和56±20(×10~(-12),V/V)。本方法可准确测定海洋环境中的挥发性硫化物。
海水和大气中挥发性硫化物分测定硫专用柱HH一sulfide-III 测试谱图：
Determination of Volatile Sulfide in Seawater and Atmosphere with Special Sulfur Column HH-sulfide-III
Special column HH-sulfide-III for the determination of volatile sulfide in seawater and atmosphere Details:
Name: Special column for sulfide
Stationary Phase: Dedicated
Specifications: 3m*3mm
Model: HH-sulfide-III
Application: Determination of 9 kinds of sulfides such as hydrogen sulfide, carbonyl sulfide, carbon disulfide, thiophene, methyl sulfide, methyl mercaptan, ethyl mercaptan, ethyl sulfide, dimethyl sulfide, etc.
Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. established a gas chromatography analysis method for volatile sulfides in the atmosphere and seawater, and determined the best experimental conditions. In order to adapt to different matrices and preservation methods, different analytical methods are used for atmospheric and seawater samples. In the determination of atmospheric samples, atmospheric sampling tank and three-stage cold trap pre-concentration gas chromatography-mass spectrometry were used, while seawater samples were determined by purge and trap-gas chromatography. The linear range of this method for the determination of atmospheric volatile sulfides is good, the precision is 7.7%-15.1%, and the detection limit is 0.23-4.7 ng; the precision of volatile sulfides in seawater is 3.5%-5.3%, and the detection limit is The limit is 2.5~3.5 ng. This method was applied to the determination of sulfides in seawater and the atmosphere in Qingdao offshore, and the average concentrations of carbonyl sulfide, dijiaosulfur and carbon disulfide in seawater were measured to be (268±58) pmol/L, (1264±0.2) pmol/L, respectively. L, (19±2) pmol/L, the average concentrations in the atmosphere were 543±39, 39±9 and 56±20(×10~(-12), V/V). This method can accurately determine the volatile sulfides in the marine environment.
Test spectrum of HH-sulfide-III special column for determination of volatile sulfide in seawater and atmosphere: