Determination of monoaromatic hydrocarbons (BTEX) in surface waters from a Brazilian subtropical hydrographic basin.

Determination of monoaromatic hydrocarbons (BTEX) in surface waters from a Brazilian subtropical hydrographic basin.

Bulletin of environmental contamination and toxicology (2014-02-18)

Andreia Neves Fernandes, Cindy Duarte Gouveia, Marco Tadeu Grassi, Janaina da Silva Crespo, Marcelo Giovanela

摘要

This study examined surface water samples for the presence of the monoaromatic hydrocarbons benzene, toluene, ethylbenzene and xylene. Water samples were collected from the sub-basin of the Tegas River and the Marrecas Stream microbasin located in the metropolitan region of the municipality of Caxias do Sul (Rio Grande do Sul State, Brazil). For all sampling points evaluated, only toluene was detected, with concentrations values in the range of 1.70-18.44 μg L(-1). In general, the relatively high toluene concentration for the samples collected were above the limit of 2 μg L(-1) established by the Brazilian government for Class I rivers for the protection of aquatic life. However, they were well below the established limit of 170 μg L(-1) in water used for human consumption.

材料

产品编号

品牌

产品描述

179418

Sigma-Aldrich

甲苯, ACS reagent, ≥99.5%

34866

Sigma-Aldrich

甲苯, suitable for HPLC, 99.9%

650579

Sigma-Aldrich

甲苯, HPLC Plus, for HPLC, GC, and residue analysis, ≥99.9%

244511

Sigma-Aldrich

甲苯, anhydrous, 99.8%

270709

Sigma-Aldrich

苯, suitable for HPLC, ≥99.9%

319953

Sigma-Aldrich

苯, ACS reagent, ≥99.0%

12540

Supelco

苯, analytical standard

401765

Sigma-Aldrich

苯, anhydrous, 99.8%

32212

Sigma-Aldrich

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

E12508

Sigma-Aldrich

乙苯, ReagentPlus^®, 99%

CRM48617

Supelco

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

PHR1310

Supelco

苯, Pharmaceutical Secondary Standard; Certified Reference Material

179965

Sigma-Aldrich

甲苯, Laboratory Reagent, ≥99.3%

89680

Supelco

甲苯, analytical standard

296848

Sigma-Aldrich

乙苯, anhydrous, 99.8%

PHR1311

Supelco

甲苯, Pharmaceutical Secondary Standard; Certified Reference Material

03079

Supelco

乙苯, analytical standard

PHR1317

Supelco

残留溶剂-甲苯, Pharmaceutical Secondary Standard; Certified Reference Material

40084

Supelco

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

487104

Supelco

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

CRM48620

Supelco

甲苯溶液, certified reference material, TraceCERT^®, 200 μg/mL in methanol, ampule of 1 mL

PHR1229

Supelco

乙苯, Pharmaceutical Secondary Standard; Certified Reference Material

30-3280

Sigma-Aldrich

甲苯, JIS special grade, ≥99.5%

708046

Sigma-Aldrich

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

736198

Supelco

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

717967

Sigma-Aldrich

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

708054

Sigma-Aldrich

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

714917

Sigma-Aldrich

乙苯溶液溶液, suitable for 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

717959

Sigma-Aldrich

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

551341

Sigma-Aldrich

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