Analysis of VOCs according to EPA Method 8260

Demonstration of an analytical method that meets the requirements outlined in U.S. EPA Method 8260D utilizing U.S. EPA Methods 5030 and 5035 preparation methods for the quantitation of purgeable organic compounds (POCs) in wastewater and soil, using the Teledyne Tekmar Atomx XYZ purge and trap (P&T) system along with a Thermo Scientific™ ISQ™ 7000 Mass Spectrometry (MS) system coupled with a Thermo Scientific™ TRACE™ 1310 Gas Chromatograph (GC) and Thermo Scientific™ Chromeleon™ Chromatography Data System (CDS). Method linearity, method detection limit (MDL), and Initial Demonstration of Capability (IDC) were assessed to evaluate method performance. 

赛默飞新一代液质联用系统TSQ Altis 同时分析检测17种全氟化合物

本文基于赛默飞新一代三重四极杆液质联用平台TSQ Altis建立了 17种全氟化合物的同时分析检测方法。优化后的色谱条件：接 C18 Trap柱，分析柱为Thermo Scientic Accucore RPMS (100 × 2.1 mm, 2.6 μm)，甲醇-水（水相含10mM乙酸铵）为流动相，流 速0.3 mL/min，柱温35℃。采用H-ESI源，扫描方式为选择反应检 测（SRM）。结果表明： 环境水样直接进样10uL，17种全氟化合 物检出限均能较好满足环境法规限值的要求，各化合物线性关系 良好，线性相关系数均＞0.99。在20 pg/mL浓度水平下连续进样6 针，RSD均小于5.1%。采用该方法对生活饮用水、地下水等环境水体样品进行分析，灵敏度和重现性结果良好。

Automated, high-throughput LC-MS solutions for water and beverage analysis

Exposure to pesticides, pharmaceuticals, personal care products, endocrine disruptors, and perfluorinated compounds in water is a significant health concern. As our understanding of these hazards increase, lower limits of detection (LODs) become critical. With the emergence of potential new contaminants, laboratories performing water and beverage analysis will be challenged to quickly detect and quantify both targeted and nontargeted contaminants.