搅拌棒吸附萃取-气相色谱法测定水中典型邻苯二甲酸酯类的研究

摘要邻苯二甲酸酯类化合物广泛应用于塑料、化妆品等工业领域，其对环境与生活的危害也日益引发人们的关注。这类化合物对人体有严重的危害，能够造成内分泌失调，甚至致癌。本研究选取了两种邻苯二甲酸酯类化合物邻苯二甲酸二乙酯（DEP）和邻苯二甲酸二丁酯（DBP），建立了搅拌棒吸附萃取-气相色谱法（SBSE-GC-FID）进行富集检测。讨论了吸附时间、pH、盐溶液浓度对吸附效率的影响，考察了时间、温度和洗脱溶剂对解析效果的影响。在实验确定的优化条件下，对水样中的DEP和DBP进行富集检测，方法的最低检出限分别为0.0311mg/L（DEP）和0.0213mg/L（DBP），精密度分别为2.93%（DEP）和1.61%（DBP），该方法对自来水的加标回收率为91.1~105.0%（DEP）和89.7~112.3%（DBP），对实际水样的加标回收率为93.5~111.7% (DEP)和92.4~115.0%（DBP）。27169
关键词搅拌棒吸附萃取邻苯二甲酸酯气相色谱/FID
毕业论文设计说明书外文摘要
Title   Research on the Determination of Typical PAEs in Water   by Stir Bar Sorptive Extraction and GC-FID
Abstract
Phthalates (PAEs) are now widely used in areas like plastics and cosmetics industry. At the same time, they have caused much pollution to the environment and our life, which have raised much concern from the public. PAEs are toxic to the human beings and they could cause endocrine dyscrasia, even cancer. Diethyl phthalate (DEP) and Dibutyl Phthalate (DBP) were selected as the derivating agents and an analytical method to determine them by stir bar sorptive extraction and gas chromatography–flame ionization detector was established. Enhance, the appropriate conditions, such as extraction time, the value of pH and salt effect were discussed. Also, the appropriate conditions like desorption temperature, desorption time and desorption solvents were studied.
Under the determined optimization conditions, the enrichment and determination experiments were developed. For DEP, the results of detection limit and coefficient of varition were 0.0311mg/L and 2.93%. The recoveries of tap water and river water sample were 91.1~105.0% and 93. 5~111.7%, respectively. For DBP, the results of detection limit and coefficient of varition were 0.0213mg/L and 1.61%. The recoveries of tap water and river water sample were 89.7~112.3% and 92.4~115.0%, respectively.
Keywords SBSE PAEs GC-FID
目   次
1 绪论    1
1.1 邻苯二甲酸酯简介    1
1.1.1 邻苯二甲酸酯性质    1
1.1.2 邻苯二甲酸酯的作用和危害    1
1.1.3 邻苯二甲酸酯在水体中的存在情况    1
1.2 邻苯二甲酸酯的富集方法    2
1.2.1 液-液萃取法    2
1.2.2 液相微萃取法    2
1.2.3 固相萃取法    3
1.2.4 固相微萃取法    3
1.2.5 固相膜萃取法    3
1.2.6 搅拌棒吸附萃取法    4
1.3 邻苯二甲酸酯的检测方法    4
1.3.1 气相色谱法及气相色谱-质谱法(GC及GC-MS)    4
1.3.2 高效液相色谱法及高效液相色谱-质谱法(HPLC及HPLC-MS)    5
1.3.3 其他检测方法    5
1.4 课题的研究内容与意义    5
1.4.1 研究目的与意义    5 搅拌棒吸附萃取-气相色谱法测定水中典型邻苯二甲酸酯类的研究 :http://www.751com.cn/huaxue/lunwen_21590.html