Reconstruction of pollution history of organic contaminants in the upper Gulf of Thailand by using sediment cores

First report from Tropical Asia Core (TACO) project

Ruchaya Boonyatumanond, Gullaya Wattayakorn, Atsuko Amano, Yoshio Inouchi, Hideshige Takada

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

This paper reports the first reconstruction of a pollution history in tropical Asia from sediment cores. Four sediment core samples were collected from an offshore transect in the upper Gulf of Thailand and were analyzed for organic micropollutants. The cores were dated by measurement of 137Cs and geochronometric molecular markers (linear alkylbenzenes, LABs; and tetrapropylene-type alkylbenzenes, TABs). Polychlorinated biphenyl (PCB) concentrations showed a subsurface maximum in layers corresponding to the 1970s, indicating the effectiveness of regulation of PCBs in Thailand. LAB concentrations increased over time, indicating the increase in input of sewage into the Gulf during the last 30 years. Hopanes, biomarkers of petroleum pollution, also increased over time, indicating that the inputs of automobile-derived hydrocarbons to the coastal zone has been increasing owing to the increased number of cars in Thailand since the 1950s. Polycyclic aromatic hydrocarbons (PAHs) increased in the layers corresponding to the 1950s and 1960s, probably because of the increased inputs of automobile-derived PAHs. PAH concentrations in the upper layers corresponding to the 1970s and later remained constant or increased. The absence of a subsurface maximum of PAHs contrasts with results observed in industrialized countries. This can be explained by the facts that the Thai economy did not depend on coal as an energy source in the 1960s and that economic growth has continued since the 1970s to the present. The deposition flux of PAHs and hopanes showed a dramatic offshore decrease, whereas that of LABs was uniform.

Original languageEnglish
Pages (from-to)554-565
Number of pages12
JournalMarine Pollution Bulletin
Volume54
Issue number5
DOIs
Publication statusPublished - 2007 May
Externally publishedYes

Fingerprint

polycyclic aromatic hydrocarbons
Polycyclic aromatic hydrocarbons
sediment core
Thailand
PAH
Sediments
Pollution
pollution
Impurities
sediments
automobiles
pollutant
automobile
history
Polychlorinated biphenyls
Automobiles
PCB
Core samples
polychlorinated biphenyls
Biomarkers

Keywords

  • Hopanes
  • Linear alkylbenzenes (LABs)
  • PCBs
  • Polycyclic aromatic hydrocarbons
  • Sediment core

ASJC Scopus subject areas

  • Aquatic Science
  • Oceanography
  • Pollution

Cite this

Reconstruction of pollution history of organic contaminants in the upper Gulf of Thailand by using sediment cores : First report from Tropical Asia Core (TACO) project. / Boonyatumanond, Ruchaya; Wattayakorn, Gullaya; Amano, Atsuko; Inouchi, Yoshio; Takada, Hideshige.

In: Marine Pollution Bulletin, Vol. 54, No. 5, 05.2007, p. 554-565.

Research output: Contribution to journalArticle

@article{8664b899d70b4af99ef4468dd7af875b,
title = "Reconstruction of pollution history of organic contaminants in the upper Gulf of Thailand by using sediment cores: First report from Tropical Asia Core (TACO) project",
abstract = "This paper reports the first reconstruction of a pollution history in tropical Asia from sediment cores. Four sediment core samples were collected from an offshore transect in the upper Gulf of Thailand and were analyzed for organic micropollutants. The cores were dated by measurement of 137Cs and geochronometric molecular markers (linear alkylbenzenes, LABs; and tetrapropylene-type alkylbenzenes, TABs). Polychlorinated biphenyl (PCB) concentrations showed a subsurface maximum in layers corresponding to the 1970s, indicating the effectiveness of regulation of PCBs in Thailand. LAB concentrations increased over time, indicating the increase in input of sewage into the Gulf during the last 30 years. Hopanes, biomarkers of petroleum pollution, also increased over time, indicating that the inputs of automobile-derived hydrocarbons to the coastal zone has been increasing owing to the increased number of cars in Thailand since the 1950s. Polycyclic aromatic hydrocarbons (PAHs) increased in the layers corresponding to the 1950s and 1960s, probably because of the increased inputs of automobile-derived PAHs. PAH concentrations in the upper layers corresponding to the 1970s and later remained constant or increased. The absence of a subsurface maximum of PAHs contrasts with results observed in industrialized countries. This can be explained by the facts that the Thai economy did not depend on coal as an energy source in the 1960s and that economic growth has continued since the 1970s to the present. The deposition flux of PAHs and hopanes showed a dramatic offshore decrease, whereas that of LABs was uniform.",
keywords = "Hopanes, Linear alkylbenzenes (LABs), PCBs, Polycyclic aromatic hydrocarbons, Sediment core",
author = "Ruchaya Boonyatumanond and Gullaya Wattayakorn and Atsuko Amano and Yoshio Inouchi and Hideshige Takada",
year = "2007",
month = "5",
doi = "10.1016/j.marpolbul.2006.12.007",
language = "English",
volume = "54",
pages = "554--565",
journal = "Marine Pollution Bulletin",
issn = "0025-326X",
publisher = "Elsevier Inc.",
number = "5",

}

TY - JOUR

T1 - Reconstruction of pollution history of organic contaminants in the upper Gulf of Thailand by using sediment cores

T2 - First report from Tropical Asia Core (TACO) project

AU - Boonyatumanond, Ruchaya

AU - Wattayakorn, Gullaya

AU - Amano, Atsuko

AU - Inouchi, Yoshio

AU - Takada, Hideshige

PY - 2007/5

Y1 - 2007/5

N2 - This paper reports the first reconstruction of a pollution history in tropical Asia from sediment cores. Four sediment core samples were collected from an offshore transect in the upper Gulf of Thailand and were analyzed for organic micropollutants. The cores were dated by measurement of 137Cs and geochronometric molecular markers (linear alkylbenzenes, LABs; and tetrapropylene-type alkylbenzenes, TABs). Polychlorinated biphenyl (PCB) concentrations showed a subsurface maximum in layers corresponding to the 1970s, indicating the effectiveness of regulation of PCBs in Thailand. LAB concentrations increased over time, indicating the increase in input of sewage into the Gulf during the last 30 years. Hopanes, biomarkers of petroleum pollution, also increased over time, indicating that the inputs of automobile-derived hydrocarbons to the coastal zone has been increasing owing to the increased number of cars in Thailand since the 1950s. Polycyclic aromatic hydrocarbons (PAHs) increased in the layers corresponding to the 1950s and 1960s, probably because of the increased inputs of automobile-derived PAHs. PAH concentrations in the upper layers corresponding to the 1970s and later remained constant or increased. The absence of a subsurface maximum of PAHs contrasts with results observed in industrialized countries. This can be explained by the facts that the Thai economy did not depend on coal as an energy source in the 1960s and that economic growth has continued since the 1970s to the present. The deposition flux of PAHs and hopanes showed a dramatic offshore decrease, whereas that of LABs was uniform.

AB - This paper reports the first reconstruction of a pollution history in tropical Asia from sediment cores. Four sediment core samples were collected from an offshore transect in the upper Gulf of Thailand and were analyzed for organic micropollutants. The cores were dated by measurement of 137Cs and geochronometric molecular markers (linear alkylbenzenes, LABs; and tetrapropylene-type alkylbenzenes, TABs). Polychlorinated biphenyl (PCB) concentrations showed a subsurface maximum in layers corresponding to the 1970s, indicating the effectiveness of regulation of PCBs in Thailand. LAB concentrations increased over time, indicating the increase in input of sewage into the Gulf during the last 30 years. Hopanes, biomarkers of petroleum pollution, also increased over time, indicating that the inputs of automobile-derived hydrocarbons to the coastal zone has been increasing owing to the increased number of cars in Thailand since the 1950s. Polycyclic aromatic hydrocarbons (PAHs) increased in the layers corresponding to the 1950s and 1960s, probably because of the increased inputs of automobile-derived PAHs. PAH concentrations in the upper layers corresponding to the 1970s and later remained constant or increased. The absence of a subsurface maximum of PAHs contrasts with results observed in industrialized countries. This can be explained by the facts that the Thai economy did not depend on coal as an energy source in the 1960s and that economic growth has continued since the 1970s to the present. The deposition flux of PAHs and hopanes showed a dramatic offshore decrease, whereas that of LABs was uniform.

KW - Hopanes

KW - Linear alkylbenzenes (LABs)

KW - PCBs

KW - Polycyclic aromatic hydrocarbons

KW - Sediment core

UR - http://www.scopus.com/inward/record.url?scp=34247854767&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34247854767&partnerID=8YFLogxK

U2 - 10.1016/j.marpolbul.2006.12.007

DO - 10.1016/j.marpolbul.2006.12.007

M3 - Article

VL - 54

SP - 554

EP - 565

JO - Marine Pollution Bulletin

JF - Marine Pollution Bulletin

SN - 0025-326X

IS - 5

ER -