scholarly journals Pollutants in Hong Kong Soils: Organochlorine Pesticides and Polychlorinated Biphenyls

2020 ◽  
Author(s):  
M.K. Chung ◽  
R. Hu ◽  
K.C. Cheung ◽  
M.H. Wong
Keyword(s):  
Hong Kong ◽  
Polychlorinated Biphenyls ◽  
Organochlorine Pesticides ◽  
Soil Samples ◽  
Recent Application ◽  
Industrial Areas ◽  
Quality Guidelines ◽  
Medium Range ◽  
The City ◽  
Indicator Pcbs

AbstractOrganochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) were investigated in 138 soil samples collected in Hong Kong. Results showed that within the selected OCPs, only DDT and its metabolites (DDD and DDE) were frequently detected. Of 138 soil samples, 18% were non-detected for any DDT residues, while 25% were contaminated sporadically with DDT only (non-detected to 1090 µg kg−1) and 57% contained various combinations of DDT, DDD and DDE (2.03 to 1118 µg kg−1). In contrast, total PCBs (∑66 congeners) contamination was distributed more evenly (0.22 to 154 µg kg−1) than DDTs, but serious contamination was found in industrial areas and soils collected near highways. Concentrations of 7 indicator PCBs ranged between non-detected to 34.5 µg kg−1. The ratios of DDT/metabolites were typically greater than 1, thus suggesting recent application of DDT. Medium-range deposition from industrial areas within as well as away from the city is also suspected to be the origins of DDTs and PCBs found in Hong Kong soils. The concentrations of DDTs and PCBs in all soil samples did not exceed the recommended values in soil quality guidelines except 3 samples for DDT from locations far away from densely populated districts such as Tuen Mun and Tin Shui Wai. Therefore, DDTs and PCBs were not of significant concern in terms of their impacts on public health and environment.

Polychlorinated biphenyls and selected organochlorine pesticides in serum of Slovak population from industrial and non-industrial areas

2014 ◽  
Vol 186 (11) ◽  
pp. 7643-7653 ◽  
Author(s):  
Jana Chovancová ◽  
Beáta Drobná ◽  
Anna Fabišiková ◽  
Kamil Čonka ◽  
Soňa Wimmerová ◽  
...  
Keyword(s):  
Polychlorinated Biphenyls ◽  
Organochlorine Pesticides ◽  
Industrial Areas ◽  
Slovak Population

scholarly journals Polychlorinated Biphenyls Concentration in Soil Samples from Pasture Areas

2011 ◽  
Vol 68 (2) ◽  
Author(s):  
Rowena Ana CHELEMAN ◽  
Maria TOFANA ◽  
Raluca POPESCU ◽  
Liana Claudia SALANŢĂ ◽  
Delia TRUTA
Keyword(s):  
Polychlorinated Biphenyls ◽  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Surface Soil ◽  
Soil Samples ◽  
Stockholm Convention ◽  
Terrestrial Environment ◽  
Sensitive Areas ◽  
Indicator Pcbs ◽  
Identification And Quantification

Polychlorinated biphenyls (PCBs) are persistent organic pollutants (POPs) banned under the Stockholm Convention. Because soil represents an important reservoir for PCBs in the terrestrial environment it is important to monitor the levels of the contaminants deposited to the surface soil, especially in the case of sensitive areas. Six indicator and 11 dioxin-like PCBs were analyzed in surface soil from two counties in Transylvania region, Romania. For the identification and quantification of these contaminants the method used followed the Romanian standard SR ISO 10382/2007. Concentrations of indicator PCBs in the two sites were 1.19 ng/g dw in soil samples from S1 and 4.05 ng/g dw in soil samples from S2. Regarding dioxin-like PCBs concentrations in the two sites the TEQ values were 0.03 and 0.01 ng TEQ/g dw. Levels of PCBs varied between and within sites. Concentrations of PCBs obtained in this study are comparable with other PCBs levels from Romanian regions.

scholarly journals Persistent organochlorine pesticides and polychlorinated biphenyls in intensive agricultural soils from North India

2011 ◽  
Vol 6 (No. 4) ◽  
pp. 190-197 ◽  
Author(s):  
B. Kumar ◽  
S. Kumar ◽  
R. Gaur ◽  
G. Goel ◽  
M. Mishra ◽  
...  
Keyword(s):  
Polychlorinated Biphenyls ◽  
Organochlorine Pesticides ◽  
Agricultural Soils ◽  
Dry Weight ◽  
Average Concentration ◽  
North India ◽  
The Past ◽  
Quality Guidelines ◽  
Contamination Of Soils ◽  
The Mean

Organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) were determined in agricultural soils from the northern states of India. The average concentration of OCPs was 37.67 ± 0.33 ng/g (dry weight − DW) while HCHs alone accounted for 93% followed by DDT (4.27%) and endosulphan (2.51%). The α/γ ratio of HCH (< 0.01–8.64) reflects the use of technical as well as lindane formulations. The ratio of p,p’-DDT/p,p’-DDE (0.16) and o,p’-DDT/p,p’-DDT (< 0.01) indicates the contamination of soils with the past use of technical DDT. The mean concentrations of endosulphan and dieldrin were 0.95 ± 0.53 ng/g (DW)and 0.16 ± 0.07 ng/g (DW), respectively. The average concentration of PCBs was 13.44 ± 0.06 ng/g (DW). The toxic equivalency (TEQ) calculated using WHO 2005-TEFs ranged from 0.01 to 105.40 pg WHO 2005-TEQ/g (DW) with the mean of 13.78 ± 0.11 pg WHO 2005-TEQ/g (DW). PCB-105 (25%), PCB-114 (18%), and PCB-118 (18%) were the dominant congeners and accounted for 61% while a non ortho PCBs contributed only 18% to total DL-PCBs. The contamination of soils is a matter of concern but is not alarming because the observed levels were lower than those given by the Canadian soil quality guidelines.

Polychlorinated biphenyls and organochlorine pesticides in local waterbird eggs from Hong Kong: Risk assessment to local waterbirds

Chemosphere ◽  
2011 ◽  
Vol 83 (7) ◽  
pp. 891-896 ◽  
Author(s):  
Yuan Wang ◽  
Margaret B. Murphy ◽  
James C.W. Lam ◽  
Liping Jiao ◽  
Captain C.L. Wong ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Hong Kong ◽  
Polychlorinated Biphenyls ◽  
Organochlorine Pesticides

Productive engagement and ageing in productivist welfare regimes: questing for an age-friendly city in Hong Kong

2021 ◽  
pp. 1-23
Author(s):  
Zhuoyi Wen ◽  
Ka Ho Mok ◽  
Padmore Adusei Amoah
Keyword(s):  
Hong Kong ◽  
Later Life ◽  
Active Ageing ◽  
Welfare Regimes ◽  
Social Survey ◽  
Voluntary Engagement ◽  
Social Provisions ◽  
The City ◽  
Cross National ◽  
Productive Engagement

Abstract The population aged 65 years and above in Hong Kong is projected to rise from 15 per cent in 2014 to 38.4 per cent in 2069. Therefore, the quest for creating age-friendly conditions and the promotion of active ageing has become a priority for the Hong Kong Government and stakeholders in the city. Using a cross-national comparative framework for productive engagement in later life, this article examines the predictors of productive engagement (perceived voluntary engagement) in two districts (the Islands and Tsuen Wan) of Hong Kong – a typical productivist welfare regime in Asia. Data were collected through a social survey to ascertain the perception of an age-friendly city and active ageing in 2016 and 2018 from 1,638 persons aged 60 years and older. The results indicate some differences in the perception of the key determinants in both districts, but the factors associated with productive engagement were consistent, namely social atmosphere, social provisions and the built environment. The findings are discussed within the broader discourse on social gerontology, age-friendly cities and productivist welfare regimes.

scholarly journals Desire and the Abject in the City Becoming-Other

1970 ◽  
Vol 13 (1) ◽  
Author(s):  
John Fitzgerald ◽  
Terry Threadgold
Keyword(s):  
Hong Kong ◽  
News Media ◽  
Close Proximity ◽  
The City

When The Age renamed the corner of Russell and Bourke streets the ‘Golden Elbow’ it brought the city into close proximity with an altogether different city. Neither Chang Mai, Hong Kong nor Melbourne, the Golden Elbow was defined by what it could be. Neither one thing (Melbourne) nor another (somewhere else), the Golden Elbow is a space of the city-becoming-other. Through narrative work and news media maps of no-go zones, machines mobilise fear and thus value, from the desire flowing through this abject zone. Capitalism sucks value from these encounters through the production of fear as affect. The city-becoming-other is both enormously productive, and destructive of bodies caught up in the mix. This article explores the flow of desire and the abject of a city becoming other through a street drug marketplace.  The encounter with the abject brings use closer to the beauty and fear of ontological mixity.

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