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Influence of the E Cigarette Emission Profile by the Ratio of Glycerol to Propylene Glycol in E Liquid Composition

Full PDF Version Download Influence of the E Cigarette Emission Profile by the Ratio of Glycerol to Propylene Glycol in E Liquid Composition ABSTRACT The use of electronic cigarettes (E-cig) is popular because of the perception that they are less addictive and safer compared to the traditional cigarettes. Nevertheless, there are

On-road tailpipe emission characteristics and ozone formation potentials of VOCs from gasoline, diesel and liquefied petroleum gas fueled vehicles

On-road tailpipe emission characteristics and ozone formation potentials of VOCs from gasoline, diesel and liquefied petroleum gas fueled vehicles Download PDF Version HIGHLIGHTS VOCs from various types of vehicles were investigated systematically with the PEMS. Aromatics and alkanes were the dominant VOC groups from in-use vehicle exhaust. Aromatics were the major

Nutech 3000 THC & NMHC Analyzer Application Note for Wastewater VOCs Testing in San Francisco

Background Introduction This application note is provided by Cambrian Innovation, the leading wastewater treatment solution provider in US. They built a plant to help Anchor Brewing, one of the oldest beer producer in US,  to deal with their wastewater and make sure that after their treatment, the wastewater's NMHC concentration should be within allowable

Study of VOC and Photochemical Ozone Pollution in the Pearl River Delta Region

Study of VOC and Photochemical Ozone Pollution in the Pearl River Delta Region   1 INTRODUCTION 1.1 Background 1.1.1 The rapid economic development in the Pearl River Delta (PRD) Region including Hong Kong Special Administrative Region over the past decade has resulted in changes in the nature of air pollutants emitted from various activities in

By |2022-08-23T08:01:47+00:00March 10th, 2021|NON-TO 15, Technical Articles|0 Comments

US EPA Method TO-15 VS US EPA Method TO-14A

US EPA Method TO-15 VS US EPA Method TO-14A Compendium Method TO-15 is significant in that it extends the Compendium Method TO-14A description for using canister-based sampling and gas chromatographic analysis in the following ways: • Compendium Method TO-15 incorporates a multisorbent/dry purge technique or equivalent (see Appendix A) for water management thereby addressing a

By |2022-08-23T08:02:01+00:00March 4th, 2021|NON-TO 15, Technical Articles|0 Comments

Releases of Fire-Derived Contaminants from Water Pipes Made of Polyvinyl Chloride Polymer

Abstract: In order to assess the human exposure risks from the release of contaminants from water pipes made of polyvinyl chloride (PVC), experiments were carried out by subjecting the PVC pipe material to burning and leaching conditions followed by analysis of the emission and leachate samples. The emissions of burning pipes were analyzed by both

Control of VOCs Emissions by Condenser Pre-treatment in a Semiconductor Fab

Control of VOCs Emissions by Condenser Pre-treatment in a Semiconductor Fab   Abstract The performance of a modified design of local condensers to pre-treat a variety of volatile organic compounds (VOCs) emitted from the stripping process of a semiconductor fab was tested in this study. The reaction temperature of the condensers was controlled at around

Whole Air Canister Sampling and Preconcentration GC-MS Analysis for pptv Levels of Trimethylsilanol in Semiconductor Cleanroom Air

Whole Air Canister Sampling and Preconcentration GC-MS Analysis for pptv Levels of Trimethylsilanol in Semiconductor Cleanroom Air   Abstract The costly damage trimethylsilanol (TMS) in cleanrooms exacts on scanner lenses in the semiconductor industry has resulted in the demand for accurate and reliable methods for measuring TMS at trace levels (i.e., parts-per-trillion, volume-per-volume of air

Volatile Organic Compounds Monitoring for Semiconductor Foundry Clean Room Air

Volatile Organic Compounds Monitoring for Semiconductor Foundry Clean Room Air ABSTRACT Air samples were collected in consecutive days using Summa canisters from semiconductor foundry clean rooms and air entrances. By coupling a NuTech pre-concentrator with an Agilent GC-MS, an optimized method for qualitative and quantitative analysis of VOC compounds was developed. Method

By |2022-08-25T08:32:08+00:00July 23rd, 2020|NON-TO 15, Technical Articles|0 Comments

Not all 3.2 L air sampling canisters are 3 liters. Wait… what!?

Nutech Editor During our communication with customers, we have a quite frequent feedback: what we need is a 3.2L Summa canister and your 3L canister doesn’t meet the requirement. Even worse, some tenders specifically list 3.2L as a must-meet technical specification and in some cases even go further to emphasize this as a plus

By |2022-08-23T08:04:32+00:00June 11th, 2020|NON-TO 15, Technical Articles|0 Comments
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