PMID- 24467173
OWN - NLM
STAT- MEDLINE
DCOM- 20151016
LR  - 20181202
IS  - 1520-5851 (Electronic)
IS  - 0013-936X (Linking)
VI  - 48
IP  - 5
DP  - 2014
TI  - Selected organochlorine pesticides and polychlorinated biphenyls in urban 
      atmosphere of Pakistan: concentration, spatial variation and sources.
PG  - 2610-8
LID - 10.1021/es404711n [doi]
AB  - Robust knowledge on the occurrence and distribution of persistent organic 
      pollutants (POPs) in the atmosphere of low-latitude regions is inevitable to 
      forecast their transportation to pristine ecosystem and assess toxicological 
      impacts upon local biota. Despite the earlier revelation of organochlorine 
      pesticides (OCPs) and polychlorinated biphenyls (PCBs) in soils/sediments and 
      water bodies in Pakistan, knowledge about atmospheric levels and sources of these 
      POPs remains limited. For the first time, a network of XAD resin-based passive 
      air samplers (PAS) was established across megacities of Pakistan, i.e., Karachi, 
      the coastal city, and Lahore, lying in an agricultural region. Typical 
      geographical locations of the two cities allowed assessing the influence of 
      source regions on the occurrence and distribution patterns of selected POPs. 
      Average concentrations (ng/PAS) in both cities ranged as endosulfan 39-101, DDTs 
      63-92, HCHs 33-65, heptachlor 10-26, and PCBs 48-61. High concentrations of 
      endosulfan and lindane as observed throughout Lahore were certainly due to their 
      ongoing applications in surrounding agricultural fields. Lower proportions of 
      parental DDTs as compared to their metabolites were observed in both cities, 
      suggesting inputs of DDTs from older or secondary sources. Owing to ultimate 
      discharge of country's agricultural/industrial waste through river streams in to 
      Arabian Sea, the coastal region of Karachi was found potential source of 
      weathered POPs that could be dissipated at regional/global scales by maritime 
      advections. The study contributes to the pool of information on fate and 
      geographical distribution of POPs in subtropical developing countries.
FAU - Nasir, Jawad
AU  - Nasir J
AD  - Key Laboratory of Tibetan Environment Changes and Land Surface Processes, 
      Institute of Tibetan Plateau Research, Chinese Academy of Sciences , Beijing 
      100085, China.
FAU - Wang, Xiaoping
AU  - Wang X
FAU - Xu, Baiqing
AU  - Xu B
FAU - Wang, Chuanfei
AU  - Wang C
FAU - Joswiak, Daniel R
AU  - Joswiak DR
FAU - Rehman, Said
AU  - Rehman S
FAU - Lodhi, Arifa
AU  - Lodhi A
FAU - Shafiq, Shoaib
AU  - Shafiq S
FAU - Jilani, Rehmatullah
AU  - Jilani R
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20140210
PL  - United States
TA  - Environ Sci Technol
JT  - Environmental science & technology
JID - 0213155
RN  - 0 (Air Pollutants)
RN  - 0 (Hydrocarbons, Chlorinated)
RN  - 0 (Insecticides)
RN  - DFC2HB4I0K (Polychlorinated Biphenyls)
SB  - IM
MH  - Air Pollutants/*analysis
MH  - Cities
MH  - *Environmental Monitoring
MH  - Hydrocarbons, Chlorinated/*analysis
MH  - Insecticides/*analysis
MH  - Pakistan
MH  - Polychlorinated Biphenyls/*analysis
EDAT- 2014/01/29 06:00
MHDA- 2015/10/17 06:00
CRDT- 2014/01/29 06:00
PHST- 2014/01/29 06:00 [entrez]
PHST- 2014/01/29 06:00 [pubmed]
PHST- 2015/10/17 06:00 [medline]
AID - 10.1021/es404711n [doi]
PST - ppublish
SO  - Environ Sci Technol. 2014;48(5):2610-8. doi: 10.1021/es404711n. Epub 2014 Feb 10.