An Analytical Method to Determine Selected Nitro-PAHs in Soil Samples by HPLC With Fluorescence Detection

A simple analytical procedure was optimized for the analysis of selected nitro polycyclic aromatic hydrocarbons in soil samples. The procedure involved the sonication of analytes with dichloromethane and derivatization through sodium borohydride reduction. 3-Nitrophenanthrene, 9-Nitrophenanthrene, 1-Nitropyrene, and 3-Nitrofluoranthene were selected based on toxicity, abundance, and reference material availability. Analytical determinations were carried out by high-performance liquid chromatography with fluorescence detection, applying 254/410, 254/444, 244/438, and 244/528 nm for 3-Nitrophenanthrene, 9-Nitrophenanthrene, 1-Nitropyrene, and 3-Nitrofluoranthene detection, respectively. Quantification limits obtained for all of these compounds were between 16 and 60 ng kg^?1 dry mass. Overall recoveries ranged from 89–106% at three fortification levels, and no significant bias was detected. Robustness of the method was demonstrated. Analyses over time were carried out for three types of soil samples and intermediate precision was estimated between 16 and 32%.     

PAHS与钛酸酯的探究

玩具制笔业新标EN7 1 PART-9主要部分PAHS和钛酸酯进行探究,其危害性毒性、存在分布、标准制定日期、限制标准的中英项进行分析探究.     

反相高效液相色谱测定土壤中多环芳烃(I)──色谱分离和超声波萃取土壤中多环芳烃

文章研究了用超声波萃取和紫外吸收检测反相高效液相色谱分离测定土壤中美国环保局规定的 １６种优先多环芳烃污染物的方法。用碳－１８柱（Ｂａｋｅｒｂｏｎｄ ＰＡＨ ６ ＰＬＵＳ １２５×３．０ ｉ．ｄ．ｍｍ”或ＰｈｅｎｏｍｅｎｘＥＮＶＩＲＯＳＥＰ－ｐｐ１２５×３．２ ｉ．ｄｍｍ）、乙腈－水梯度洗脱和紫外吸收检测反相高效液“相色谱分离检测这１６种多环芳烃的时间为３１ｍｉｎ。进样１０μＬ和在２５４ｎｍ处测定,多环芳烃的 检测限小于 １μｇ／ｍＬ（苊除外,它的检测限为 １．０５μｇ／ｍＬ）。试验和比较了 ６种溶剂超声波萃取土 壤中１６种多环芳烃的萃取效率,丙酮是最佳的。     

气相色谱法测定活性炭废气焚烧尾气中的多环芳烃

文章对活性炭炭化过程中产生的废气;经过焚烧炉焚烧后尾气中的多环芳烃进行气相色谱分析测定,侧重介绍焚烧前后结果,焚烧后的去除效率。