Portable Methane Measurement in Marine Engine Exhaust With Nutech 3000 Portable FID Analyzer Background Marine engine exhaust is hot, wet and particle-laden, and methane levels can change quickly with engine load. During a two-week field evaluation, the Nutech 3000 operated beside an established methane analyzer to test whether a portable system could provide stable,
Trace Analysis of 10 Volatile Sulfur Compounds in Air Using Canister Sampling and Nutech 8910 Preconcentrator with GC–FPD Overview Volatile sulfur compounds are important target pollutants in ambient air and fugitive emissions. Their accurate determination can be technically challenging because compounds such as hydrogen sulfide and thiols are chemically reactive and susceptible to adsorption,
In this study, volatile organic compounds (VOCs) emitted from a diesel generator fueled with biodiesel–diesel blends were analyzed using a Nutech autosampler and 8900DS preconcentrator coupled with GC–MS. Exhaust gas samples were first collected in 3 L Tedlar® bags after cooling through copper tubing. The bags were then connected to a 16-position Nutech autosampler,
Application of Nutech Remote Trigger Sampling Device and Pre-concentration System in Odor Monitoring Background Odor refers to any foul-smelling gas that irritates the olfactory system, causing discomfort and impairing the living environment. It primarily comprises six major categories of compounds: Aromatic hydrocarbons (e.g., benzene, toluene, ethylbenzene); Oxygenated compounds (e.g., phenols, alcohols, ketones, aldehydes); Alkanes
Nutech Pre-Concentration System for PGME and PGMEA Monitoring in Semiconductor Manufacturing Background As semiconductor manufacturing technology advances towards smaller nodes (e.g., 3nm, 2nm) and high-density integration, the precision and stability of the photolithography process have become critical factors determining chip performance. Propylene Glycol Methyl Ether (PGME) and Propylene Glycol Methyl Ether Acetate (PGMEA), as
Application of Nutech Preconcentrator Coupled with GC-MS in the Analysis of Trace Impurities in Fuel Hydrogen Background IntroductionHydrogen fuel cell vehicles are a key application of hydrogen energy. The purity and impurity content of hydrogen fuel have a significant impact on the discharge performance and lifespan of hydrogen fuel cells. Among the impurities that must be
Application of Nutech Canister Sampling & Preconcentration System in Volatile PFAS Monitoring in Stationary Source Emission Abstract PFAS, due to their non-degradability and bio-toxicity, have increasingly garnered attention. While mature and reliable analytical methods exist for detecting PFAS in soil and water, measurement methods for identifying and quantifying volatile PFAS or volatile fluorinated
Analysis of Ethylene Oxide by US EPA Method 327 Using Nutech 8910 Precentration System Abstract Ethylene oxide is known to be a toxic and carcinogenic compound present in ambient air. It is also released from certain industrial processes and hospital sterilization facilities. The U.S. EPA developed EPA Method 327 to address the analysis of
Application of Nutech Canister Sampling and Air Preconcentration System in Monitoring ODS and HFCs at Fugitive Emission Control Points in Industrial Parks Background Introduction Ozone Depleting Substances (ODS) are a class of chemicals that have harmful effects on the atmospheric ozone layer. They are mainly used as refrigerants, cleaning agents, foam blowing agents, and
Application of Nutech2600 Canister Trigger Sampling System and NCMS6300 Continuous Non-Methane Hydrocarbon Monitoring System in VOC Monitoring in Industrial Parks Background Introduction In recent years, the world has made significant progress in combating PM2.5 pollution. However, ozone pollution has become increasingly prominent, leading to a complex pollution scenario dominated by both PM2.5 and ozone.