【技术特点】-- SIFT-MS Voice 200挥发性气体在线检测质谱仪
新西兰Syft公司研发制造的的Voice200 能够通过选择性离子流管质谱（SIFT-MS）技术，对挥发性有机物质（VOCs）可进行即时识别和定量分析，实时检测浓度可低至pptv，瞬间分析全空气和顶空样品，操作简便，无需样品准备，适用于在商业、工业和科研环境中操作。
SIFT-MS（选择离子流管质谱）是一种直接质谱，采用精确控制的化学离子反应检测并定量微量挥发性有机化合物（VOCs）和一些无机气体。SIFT-MS技术采用多种反应物离子的温和化学电离，在无需色谱柱的情况下通过远程控制，可实现实时定量、区分同分异构体和同重物质、精确分析复杂VOC中的各组分物质、样品的便携分析等不同的应用领域分析需求。
SIFT-MS可支持多种解决方案：
1.空气质量检测——熏蒸剂检测，职业接触化学物质检测
2.环境空气检测——汽车内饰挥发性化合物检测，汽车尾气检测
3.食品和香料——乳制品风味检测，食用油过氧化的早期检测
4.医疗——呼气检测，人群呼气筛查
5.石油和天然气
Selected ion flow tube mass spectrometry (SIFT-MS) is a form of direct mass spectrometry that analyses volatile organic compounds (VOCs) in air with typical detection limits at parts-per-trillion level (by volume: pptv). Real-time, quantitative analysis is achieved by applying precisely controlled soft chemical ionization and eliminating sample preparation, pre-concentration and chromatography.
SIFT-MS uses ultra-soft, precisely controlled chemical ionization (CI) coupled with mass spectrometric detection to rapidly quantify VOCs and permanent gases to low part-per-trillion concentrations by volume (pptv).
Soft chemical ionization is applied very precisely in SIFT-MS, allowing it to provide unparalleled selectivity among direct mass spectrometry techniques.
Eight chemical ionization agents (reagent ions) are applied in Syft instruments: H3O+, NO+, O2+, O–, O2–, OH–, NO2–, and NO3–. These eight reagent ions react with analyte VOCs and inorganic gases in very well controlled ion-molecule reactions, but they do not react with the major components of air (N2, O2, and Ar). This enables SIFT-MS to analyze air at trace and ultra-trace levels without preconcentration.
The inherent technical characteristics (including the precise ionization control and elimination of the chromatographic column) has allowed Syft technologies to develop commercial instruments with significant usability and integration advantages compared to other direct mass spectrometry techniques and GC-MS.
Instantaneous, quantitative analysis of air and headspace with very high sensitivity and selectivity
Simultaneous analysis of chemically diverse VOCs (e.g. aldehydes, amines and organosulfurs)
Direct analysis of high humidity samples
Simplicity of operation
Simple integration with existing infrastructure
Low maintenance and long-term stability
BENEFITS OF SIFT-MS:
SIFT-MS is an ideal tool for high- throughput and real-time gas analysis applications. Syft’s SIFT-MS instrumentation is industry proven, providing non-technical operators with laboratory-grade chemical analysis presented in a format that they can understand and act on.
This SIFT-MS Technology Overview Brochure equips technical readers with an understanding of the fundamentals of SIFT-MS and outlines the key benefits of Syft’s solutions.
THREE FUNDAMENTAL COMPONENTS OF SIFT-MS:
SIFT-MS Schematic Representation
Reagent ion generation and selection. The eight SIFT-MS reagent ions are formed by microwave discharge through moist or dry air at low pressure. One reagent ion is selected at any particular time using the first quadrupole mass filter.
Analyte ionization. The selected reagent ion is injected into the flow tube and excess energy is removed through collisions with the carrier gas. The sample is then introduced at a known flow rate and the reactive compounds it contains are ionized by the reagent ion to form well-characterized product ions.
Analyte detection and quantitation. Product ions and unreacted reagent ions are sampled into a second quadrupole mass spectrometer. Utilizing Syft’s compound library, the software instantaneously calculates each analyte’s absolute concentration.
【技术特点对用户带来的好处】-- SIFT-MS Voice 200挥发性气体在线检测质谱仪
【典型应用举例】-- SIFT-MS Voice 200挥发性气体在线检测质谱仪
【产品所获奖项】-- SIFT-MS Voice 200挥发性气体在线检测质谱仪
