在用 Agilent 7850 ICP-MS 分析前，使用 Agilent ADS 2 对沉积物和土壤进行自动稀释

本应用简报展示了使用 Agilent 8697 顶空进样器和 Agilent 8890 气相色谱系统对用于分析饮用水中卤代烃和苯及其衍生物的方法 GB/T 5750.8-2022 进行的验证。整个系统提供了出色的性能，具有高灵敏度和稳定性。对于大多数分析物而言，相关系数 (R2 ) 为 0.999 甚至更高。峰面积 RSD 为 0.53%–5.49%。所有化合物的方法检出限(MDL) 为 0.001–0.63 μg/L，回收率为 75.5%–129.1%。

使用 Agilent 1290 Infinity II LC 和 Ultivo 串联质谱仪

Agilent 6546 LC/Q-TOF

前言 药物和个人护理用品 (PPCP) 是地表水中的污染物来源。地表水中的 PPCP 会对野生动植物带来负面影响。而 PPCP 在水中的浓度通常特别低，要想对这些化合物进行高通量分析特别困难，需要先进行耗时的固相萃取 (SPE)，然后再联用液相色谱/串联质谱仪 (LC/MS/MS) 进行分析。此外，PPCP 包括多种化合物，种类不一，化学特性各有不同。因此，需要使用具有正、负离子化模式的 高灵敏度质谱仪进行高通量综合分析。

气相色谱和气相色谱 - 质谱方法指南

前言 高分辨气相色谱质谱 (GC/MS) 系统的重要应用包括非靶向筛查方法以及未知化合物鉴定。对于许多类别化合物，低能量电子电离 (EI) 相比标准 (70 eV) EI 显著提高了分子离子的相对丰度，可以提高选择性和化合物鉴定能力，避免了由于更换离子源或进一步调谐而导致的停机时间。但是，其他离子源仍可以作为补充技术（即化学电离）与高分辨 GC/MS 联用，主要用于环境分析中重要的选定化合物分析。本研究将比较在 Agilent 7250 GC/Q-TOF 上采集的低能量 EI 和化学电离 (CI) 数据。

表征和定量海洋环境水样中的微塑料

利用 Agilent 8700 LDIR 激光红外成像系统分析微塑料污染

使用 Agilent 8700 LDIR 激光红外成像系统和轻松构建的谱库快速分析微塑料

摘要 本研究使用 Agilent Cary 630 FTIR 开发了一种水中油类的分析方法，并对其进行了评估。该方法以 ASTM D7678-11 和 ARPA-APPA 意大利指南 75/2011为基础。

摘要 Agilent 8890 GC 和 Agilent 5977C GC/MSD 配合使用氢气载气和针对氢气操作优化的新型离子源。Agilent Hydro 惰性离子源与本应用简报所述的方法配合使用时，在 0.25–1000 pg 的校准范围内为多环芳烃 (PAHs) 的分析提供了出色的峰形、灵敏度和线性。通过选择合适的仪器配置和操作条件，配备氢气载气的系统可以生成与配备氦气的系统相当甚至更出色的结果。对来自高有机含量土壤的提取物进行重复进样，证明了系统精密度和稳定性。

使用无制冷剂热脱附和气相色谱联用单四极质谱仪(GC/MS) 配合氢气进行环境空气检测

摆脱工作流程中常见的时间陷阱

Agilent 7850 ICP-MS 凭借出色的多原子及双电荷干扰控制能力，可在各种水样分析中实现卓越的长期准确度和重现性

摘要 使用 Agilent 7250 系列高分辨率精确质量 GC/Q-TOF，通过一种包括负离子化学电离(NCI) 和低能量电子轰击电离 (LE-EI) 的综合分析方法，分析了一组最具挑战性的化合物，即短链氯化石蜡 (SCCP)。 当前研究的重点是评估安捷伦 GC/Q-TOF 的 LE-EI 和 NCI 模式对 SCCP 分析的适用性，并说明每种技术的优势。

摘要 地表水中环境污染物的监测是一项极具挑战性的任务，因为污染物的数量众多，它们与环境的相关性不断变化，并且低浓度下的毒性化合物（例如，拟除虫菊酯和一些有机磷农药）需要采用具有低检测限的方法来进行检测[1]。使用精确质量高分辨率质谱 (HRMS) 技术表征样品中的已知和未知污染物的方法越来越受欢迎。然而，一些环境污染物分子量低，具有挥发性或为非极性，这使得它们更适合通过 GC 而不是LC 进行分析。 因此，为实现高灵敏度并扩大分析范围，我们采用了一种全面的工作流程，包括基于高分辨率精确质量 GC/Q-TOF 的靶向定量分析、疑似物筛查以及非靶向方法对水样中的环境污染物进行了筛查。

摘要 本研究使用一种大范围疑似物筛查工作流程，来鉴定废水出水中的有毒化学物质。该全面的分析方法将靶向和非靶向方法相结合，使用在多种电离模式下运行的高分辨率精确质量数 Agilent 7250 GC/Q-TOF、Agilent MassHunter 定量分析软件 10.1 中的 GC/Q-TOF 筛查工作流程以及农药和环境污染物的 GC/Q-TOF 精确质量谱库。

Abstract This application note illustrates a sensitive method used to analyze semivolatile organic compounds (SVOCs) on an Agilent 7000E triple quadrupole GC/MS system (GC/TQ). The use of GC/TQ instrumentation for analysis of SVOCs offers significant advantages. High selectivity afforded by multiple reaction monitoring (MRM) mode results in faster batch review and increased confidence due to the elimination of matrix interferences. These interferences are often present when using selective ion monitoring (SIM) or scan acquisition modes. Increased sensitivity can facilitate smaller extraction volumes that improve sustainability, reduce waste, and decrease costs associated with sample preparation, solvent usage, and waste disposal. A primary objective of this work was to demonstrate the ability of a GC/TQ to detect SVOCs at low levels to meet these laboratory needs while maintaining an excellent dynamic range.

Using the Agilent HydroInert source in a challenging soil matrix

Abstract Gas chromatography/mass spectrometry (GC/MS) is integral to the analysis of semivolatile organic compounds (SVOCs) in environmental matrices. Recent pressure on the helium (He) supply has required organizations to actively investigate hydrogen (H2) carrier gas, but most GC/MS analyses have reduced sensitivity and hydrogenation or dechlorination in the sources. The Agilent HydroInert source retains the ability to analyze a wide calibration range (0.1 to 100 μg/mL) and meet the U.S. Environmental Protection Agency (EPA) method 8270 calibration criteria when using H2 carrier gas.

Abstract An Agilent 8890/5977C GC/MSD system coupled with an Agilent 8697 headspace sampler was successfully used with hydrogen carrier gas for the analysis of volatile organic compounds (VOCs) in drinking water. Recent concerns with the price and availability of helium have led laboratories to look for alternative carrier gases for their GC/MS methods. For GC/MS, hydrogen is the best alternative to helium, and offers potential advantages in terms of chromatographic speed and resolution. However, hydrogen is not an inert gas, and may cause chemical reactions in the mass spectrometer electron ionization (EI) source. This can lead to disturbed ion ratios in the mass spectrum, spectral infidelity, peak tailing, and nonlinear calibration for some analytes. Therefore, a new EI source for GC/MS and GC/MS/MS was developed, and optimized for use with hydrogen carrier gas. The new source, named HydroInert, was used in the system evaluated here. In addition to the new source, the chromatographic conditions were optimized to provide separation of 80 volatile compounds in 7 minutes. Standards and samples were analyzed in both scan and SIM data acquisition modes. For the scan data, spectra were deconvoluted with MassHunter Unknowns Analysis software and searched against NIST 20 to assess the spectral fidelity. In both modes, quantitative calibration was performed for the 80 compounds over the range of 0.05 to 25 μg/L. As demonstrated in this note, the system gives excellent results for the analysis of VOCs in drinking water.

Abstract This application note evaluates the performance of an Agilent 8890/5977C gas chromatography/mass selective detector (GC/MSD) in the analysis of semivolatile organic compounds (SVOCs) at both traditional and enhanced sensitivity levels. The GC/MSD system was initially calibrated with a range of 0.2 to 150 μg/mL with 97% of the 76 evaluated analytes meeting the requirement for average response factor (RF) curve fits. Method modifications to enhance sensitivity were applied to challenge a lower calibration range of 0.01 to 10 μg/mL. Under these amended conditions, 97% of the tested compounds also met or exceeded the United States Environmental Protection Agency (US EPA) Method 8270E criteria for average RF fits. These results demonstrated a potential for lower detection of analytes.

Complying with environmental standards Metal plating is a process that uses electrochemical methods to treat material surfaces. As the process varies with the material to be plated, the pollutants in the liquid waste, and their concentrations, vary considerably. Plating wastewater is generally complex in composition, often containing elements such as Cr, Cd, Pb, Cu, Zn, and Ni.

摘要 本文介绍了采用安捷伦快速序列火焰原子吸收光谱仪同时测定土壤中铬 (Cr)、铜 (Cu)、镍(Ni) 和锌 (Zn) 元素的方法，对多种土壤成分分析标准物质 GSS-4、GSS-8、GSS-9、GSS-11、GSS-13、GSS-21、GSS-23、GSS-24 中 Cr、Cu、Ni 和 Zn 元素进行验证测试，测定值在 标准物质标准值范围内。该方法操作简便，方法检测限完全满足《土壤环境质量 农用地土壤污染风险管控标准 》的分析要求，适用于土壤中多元素的快速测定。

High throughput analysis

Heavy metal pollution Heavy metal pollution is a serious environmental problem. Heavy metals enter soil through wastes, irrigation water, air pollution, and settling of airborne particles. By migrating and accumulating in crop products, they can work their way through the food chain.

中国 HJ 781-2015 方法概括了采用四酸微波消解法进行样品前处理的固体废物样品中 22 种元素的测定程序。这种复杂样品消解物中通常包含方法的非靶向元素。如果不考虑这些额外元素（通常是未知元素）的存在，则可能导致光谱干扰。光谱干扰可能导致结果错误并迫使样品重新测量，从而造成时间浪费。

Agilent 5800 VDV ICP-OES 智能功能可最大程度减少 样品重新测量

安捷伦科技作为分析技术领域的全球领导者，在危废鉴别、常见固废 / 危废处置及资源化利用等环节的理化分析及相关环境监测领域中，积累了大量经验和应用方案。无论在检测还是科研方面，均能助您实现成就。