本文選題：離子色譜及其聯(lián)用技術(shù)　切入點(diǎn)：超聲提取　出處：《四川師范大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

【摘要】：近年來(lái)空氣顆粒物(PM_(2.5),PM_(10),TSP)成分的分析研究工作已經(jīng)成為環(huán)境科學(xué)十分重要的研究課題�？諝忸w粒物是成分復(fù)雜、危害嚴(yán)重的大氣污染物,在我國(guó)分布極廣。本文采用超聲提取技術(shù),對(duì)PM_(10)和土壤中8種有機(jī)酸的提取進(jìn)行了研究,確定了最佳浸提劑、浸提劑濃度、浸提劑加入量和提取時(shí)間。建立了離子色譜-電噴霧離子源-單級(jí)質(zhì)譜(IC-ESI-MS)同時(shí)測(cè)定PM_(10)和土壤中8種有機(jī)酸的新方法,流動(dòng)相為氫氧化鉀,并采用梯度淋洗方式,在選擇離子監(jiān)控(SIM)模式下,通過(guò)8種有機(jī)酸的峰面積定量分析。新方法對(duì)錐孔電壓、輔助離子劑和探針溫度等進(jìn)行了研究和優(yōu)化。實(shí)驗(yàn)結(jié)果令人滿意。本文采用超聲提取技術(shù),提取空氣顆粒物中的三價(jià)鉻(Cr(Ⅲ))和六價(jià)鉻(Cr(Ⅵ)),對(duì)樣品的保存、采樣膜的選擇、提取劑選擇、提取劑加入量、超聲提取時(shí)間進(jìn)行了研究,確定了最佳前處理?xiàng)l件。建立并優(yōu)化了衍生-離子色譜-紫外分光光度法同時(shí)測(cè)定PM_(2.5)、PM_(10)、TSP中的三價(jià)鉻(Cr(Ⅲ))和六價(jià)鉻(Cr(Ⅵ))的新方法。本文采用超聲提取技術(shù)提取PM_(2.5)中高氯酸鹽,對(duì)超聲提取時(shí)間進(jìn)行了研究和優(yōu)化,有效的提取了PM_(2.5)中高氯酸鹽。建立了離子色譜串聯(lián)電導(dǎo)檢測(cè)器測(cè)定PM_(2.5)中高氯酸鹽的新方法,使用氫氧化鉀作為流動(dòng)相,確定了檢測(cè)高氯酸鹽的最佳分析條件。新的方法快速,穩(wěn)定,靈敏度高,具有較高的應(yīng)用前景。
[Abstract]:In recent years, the analysis and research on the composition of PMSP has become a very important research subject in environmental science. Air particulate matter is a very complex and harmful atmospheric pollutant, which is widely distributed in China. In this paper, ultrasonic extraction technique is used. The extraction of 8 kinds of organic acids from soil was studied. The optimum extractant and the concentration of extractant were determined. A new method for simultaneous determination of eight organic acids in soil by ion chromatography-electrospray ion-source-single-stage mass spectrometry (IC-ESI-MS) was established. The mobile phase was potassium hydroxide, and gradient elution was used. The peak area quantitative analysis of 8 organic acids was carried out under the selected ion monitoring (Simm) mode. The new method was used to study and optimize the cone hole voltage, auxiliary ion agent and probe temperature. The experimental results were satisfactory. The ultrasonic extraction technique was used in this paper. Trivalent Cr (鈪，

本文編號(hào)：1593765