Área de trabajo: Análisis de materiales, Normativas y regulaciones.
Título: Aplicaciones de la desorción térmica en la industria automotriz.
Título original: A comprehensive guide to using thermal desorption in the vehicle-manufacturing industry.
Autor: Markes International UK.
Concern over passenger health and safety because of poor vehicle interior air quality (VIAQ) has led to regulations on the materials used in vehicles, and the development of associated sampling and analytical methods. The aim of these methods is to aid understanding of the VOC and SVOC content of car trim, emission profiles, and the overall quality of in-vehicle air. In this Applications Guide, we describe the role of thermal desorption (TD) within these methods, and show how it can be applied to a range of applications in the automotive industry. Examples covered include whole air testing of car cabins, direct desorption of small samples, and chamber/bag methods for certification and screening. For more information on any of the applications described, or to discuss how TD could benefit you, please contact our helpful and knowledgeable applications specialists at firstname.lastname@example.org, or by telephoning any of our regional offices (see back cover for details).
Monitoring in-vehicle air quality
Using pumped sampling to assess levels of VOCs and SVOCs in car cabins
Vapour-phase levels of VOCs and SVOCs emitted from car trim can easily build up at elevated temperatures – for example, if the car is left parked on a sunny day. The result can be a negative effect on in-vehicle air quality, which has given rise to health concerns and the development of regulations worldwide. Markes’ TD systems are ideally suited to monitoring of IVAQ by pumping air from the cabin onto sorbent tubes, for analysis by TD–GC–MS. The use of multi-bed tubes allows a wide range of analytes (C3–C44) to be sampled simultaneously, while the short, inert, uniformly-heated flow path of the thermal desorber aids recovery of labile analytes. Typical analytical conditions: Sample: Car cabin air. Pumped sampling (ACTI-VOC): 2–10 L, sampled onto a sorbent tube. TD (UNITY or TD100): Tube (Material emissions): Desorbed at 280°C (6 min). Trap (Material emissions): Analytes trapped at 20°C, desorbed at 300°C (3 min). Split ratio: 50:1 to 200:1. Analysis: GC–MS.
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