Volatile organic compound identification and characterization by PCA and mapping at a high-technology science park.

Volatile organic compound identification and characterization by PCA and mapping at a high-technology science park.

Environmental pollution (Barking, Essex : 1987) (2014-07-16)

Cheng-Hang Lan, Yu-Li Huang, Sheng-Huei Ho, Chiung-Yu Peng

摘要

High-technology industries have grown continuously in Taiwan and elsewhere in the world. Volatile organic compounds (VOCs) comprise the highest percentage of emissions in these industries. The objectives of this study were to identify VOC sources and to apportion their contributions by using a three-step approach. These included estimating concentration distributions, performing principal component analysis (PCA), and mapping concentration contours. The results showed that the dominant compound groups were aromatic and aliphatic compounds. The PCA resolved four emission sources: vehicular traffic, industrial solvents, waste water plants, and cleaning/degreasing agents. Spatial distributions showed that concentrations of vehicular traffic-related compounds (benzene and isooctane) were highest at the entrances to the science park, and strongly related to traffic volume, and that the emissions of industry-related compounds (xylene and ethylbenzene) were closest to the associated sources. This study provided an accurate, practical and efficient method of characterizing emission sources in an industrial complex.

材料

货号

品牌

产品描述

401765

Sigma-Aldrich

苯, anhydrous, 99.8%

319953

Sigma-Aldrich

苯, ≥99.0%, ACS reagent

270709

Sigma-Aldrich

苯, suitable for HPLC, ≥99.9%

12540

Supelco

苯, analytical standard

PHR1310

Supelco

苯, Pharmaceutical Secondary Standard; Certified Reference Material

32212

Sigma-Aldrich

苯, puriss. p.a., reag. Ph. Eur., ≥99.7%

296848

Sigma-Aldrich

乙苯, anhydrous, 99.8%

03079

Supelco

乙苯, analytical standard

CRM48617

Supelco

苯溶液, certified reference material, TraceCERT^®, 200 μg/mL in methanol

E12508

Sigma-Aldrich

乙苯, ReagentPlus^®, 99%

PHR1229

Supelco

乙苯, Pharmaceutical Secondary Standard; Certified Reference Material

487104

Supelco

乙苯溶液溶液, NMR reference standard, 0.1% in chloroform-d (99.8 atom % D), TMS 0.01 %, NMR tube size 5 mm × 8 in.

708046

Sigma-Aldrich

乙苯溶液溶液, NMR reference standard, 10% in chloroform-d (99.8 atom % D)

40036

Supelco

乙苯溶液溶液, certified reference material, 5000 μg/mL in methanol

717959

Sigma-Aldrich

乙苯溶液溶液, NMR reference standard, 1% in chloroform-d (99.8 atom % D)

714917

Sigma-Aldrich

乙苯溶液溶液, NMR reference standard, 0.1% in chloroform-d (99.8 atom % D), TMS 0.01 %, NMR tube size 5 mm × 8 in. , ultra-thin wall

736198

Supelco

乙苯溶液溶液, NMR reference standard, 10% in chloroform-d (99.8 atom % D), NMR tube size 5 mm × 8 in. , ultra-thin wall

612065

Sigma-Aldrich

乙苯溶液溶液, NMR reference standard, 0.1% in chloroform-d (99.8 atom % D), TMS 0.01 %, NMR tube size 10 mm × 8 in.

708054

Sigma-Aldrich

乙苯溶液溶液, NMR reference standard, 0.1% in chloroform-d ("100%", 99.96 atom % D)

717967

Sigma-Aldrich

乙苯溶液溶液, NMR reference standard, 0.1% in chloroform-d (99.8 atom % D), TMS 0.1 %

551341

Sigma-Aldrich

乙苯溶液溶液, NMR reference standard, 5% in chloroform-d (99.8 atom % D), TMS 2 %, NMR tube size 5 mm × 8 in.

710725

Sigma-Aldrich

乙苯溶液溶液, NMR reference standard, 5% in chloroform-d (99.8 atom % D), TMS 1 %, NMR tube size 5 mm × 7 in.

487120

Sigma-Aldrich

乙苯溶液溶液, NMR reference standard, 0.1% in chloroform-d (99.8 atom % D), TMS 0.01 %, NMR tube size 8 mm × 8 in.

733768

Sigma-Aldrich

乙苯溶液溶液, NMR reference standard, 10% in chloroform-d (99.8 atom % D), NMR tube size 10 mm × 8 in.

612480

Supelco

乙苯溶液溶液, NMR reference standard, 0.1% in chloroform-d (99.8 atom % D), chromium(III) acetylacetonate 0.1 mg/mL, TMS 0.01 %, NMR tube size 5 mm × 8 in.