Monitoring of 1300 organic micro-pollutants in surface waters from Tianjin, North China.
Chemosphere
; 122: 125-130, 2015 Mar.
Article
en En
| MEDLINE
| ID: mdl-25479805
ABSTRACT
In spite of the quantities and species of chemicals dramatically increased with rapid economic growth in China in the last decade, the focus of environmental research was mainly on limited number of priority pollutants. Therefore, to elucidate environmental pollution by organic micro-pollutants, this work was conducted as the first systematic survey on the occurrence of 1300 substances in 20 surface water samples of Tianjin, North China, selected as a representative area of China. The results showed the presence of 227 chemicals. The most relevant compounds in terms of frequency of detection and median concentration were bis(2-ethylhexyl) phthalate (100%; 0.26µgL(-1)), siduron (100%; 0.20µgL(-1)), lidocaine (100%; 96ngL(-1)), antipyrine (100%; 76ngL(-1)), caffeine (95%; 0.28µgL(-1)), cotinine (95%; 0.20µgL(-1)), phenanthrene (95%; 0.17µgL(-1)), metformin (90%; 0.61µgL(-1)), diethyl phthalate (90%; 0.19µgL(-1)), quinoxaline-2-carboxylic acid (90%; 0.14µgL(-1)), 2-(methylthio)-benzothiazole (85%; 0.11µgL(-1)) and anthraquinone (85%; 54ngL(-1)). Cluster analysis discriminated three highly polluted sites from others based on data similarity. Principle component analysis identified four factors, corresponding to industrial wastewater, domestic discharge, tire production and atmospheric deposition, accounting for 78% of the total variance in the water monitoring data set. This work provides a wide reconnaissance on broad spectrum of organic micro-contaminants in surface waters in China, which indicates that the aquatic environment in China has been polluted by a large number of chemicals.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Compuestos Orgánicos
/
Contaminantes Químicos del Agua
/
Sustancias Peligrosas
/
Monitoreo del Ambiente
/
Agua Dulce
Tipo de estudio:
Prognostic_studies
/
Risk_factors_studies
País/Región como asunto:
Asia
Idioma:
En
Revista:
Chemosphere
Año:
2015
Tipo del documento:
Article
País de afiliación:
Japón