Time Trends of Selected Persistent Organic Pollutants in Lake Sediments from Greenland

2003 ◽  
Vol 37 (19) ◽  
pp. 4319-4324 ◽  
Author(s):  
Carola Malmquist ◽  
Richard Bindler ◽  
Ingemar Renberg ◽  
Bert van Bavel ◽  
Edvard Karlsson ◽  
...  
Keyword(s):  
Lake Sediments ◽  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Time Trends

scholarly journals Time trends of persistent organic pollutants (POPs) and Chemicals of Emerging Arctic Concern (CEAC) in Arctic air from 25 years of monitoring

2021 ◽  
Vol 775 ◽  
pp. 145109
Author(s):  
Fiona Wong ◽  
Hayley Hung ◽  
Helena Dryfhout-Clark ◽  
Wenche Aas ◽  
Pernilla Bohlin-Nizzetto ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Time Trends

scholarly journals Spatial Distribution of the Persistent Organic Pollutants across the Tibetan Plateau and Its Linkage with the Climate Systems: Five Year Air Monitoring Study

2016 ◽  
Author(s):  
Xiaoping Wang ◽  
Jiao Ren ◽  
Ping Gong ◽  
Chuanfei Wang ◽  
Yonggang Xue ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Time Trends ◽  
Indian Monsoon ◽  
Temporal Trends ◽  
Sampling Period ◽  
The Tibetan Plateau ◽  
Transport Pathways ◽  
Air Masses

Abstract. The Tibetan Plateau (TP) has been contaminated by persistent organic pollutants (POPs), including legacy organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) through atmospheric transport. The exact source regions, transport pathways and time trends of POPs to the TP are not well understood. Here XAD-based passive air samplers (PAS) were deployed at 16 Tibetan background sites from 2007 to 2012 to gain further insight into spatial patterns and temporal trends of OCPs and PCBs. The southeastern TP was characterized by dichlorodiphenyltrichloroethane (DDT) -related chemicals delivered by Indian Monsoon air masses. The northern and northwestern TP displayed the greatest absolute concentration and relative abundance of hexachlorobenzene (HCB) in the atmosphere, caused by the westerly-driven European air masses. The interactions between the DDT polluted Indian monsoon air and the clean westerly winds formed a transition zone in central Tibet where both DDT and HCB were the dominant chemicals. Based on 5-year of continuous sampling, our data indicated declining concentrations of HCB and hexachlorocyclohexanes (HCHs) across the Tibetan region. Inter-annual trends of DDT class chemicals, however, showed less variation during this 5-year sampling period, which may be due to the on-going usage of DDT in India. This paper demonstrates the possibility of using POPs fingerprints to investigate the climate interactions and the validity of using PAS to derive inter-annual atmospheric POPs time trends.

scholarly journals Persistent Organic Pollutants in Human Milk from Central Italy: Levels and Time Trends

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Cristiana Guerranti ◽  
Michela Palmieri ◽  
Michela Mariottini ◽  
Silvano Ettore Focardi
Keyword(s):  
Human Milk ◽  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Time Trends ◽  
Maternal Age ◽  
Central Italy ◽  
Daily Intake ◽  
Age Classes ◽  
Adipose Tissues ◽  
Mother To Child

Persistent organic pollutants (POPs) such as HCB, p,p′-DDE, and PCBs were measured in Italian breast milk. This work is part of a study on human milk, adipose tissues, and food carried out in the same area over the last 20 years. The results showed the prevalence of p,p′-DDE and PCBs over HCB. Comparison of our results with those of previous studies carried out in the same area showed that concentrations are decreasing. No statistically significant differences in organochlorine levels were found when the samples were divided into maternal age classes and into the categories “primiparae” and “multiparae”. In order to quantify the amount of the molecules of interest transmitted by mother to child during breast feeding, we estimated the daily intake of each class of compounds: our results indicated that HCB and p,p′-DDE were several times lower than the safety thresholds.

Time trends of persistent organic pollutants in spanish air

2016 ◽  
Vol 217 ◽  
pp. 26-32 ◽  
Author(s):  
Adrián de la Torre ◽  
Paloma Sanz ◽  
Irene Navarro ◽  
María Ángeles Martínez
Keyword(s):  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Time Trends
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