Persistent organic pollutants in marine biota environmental and human health risks

... POPs in 16 the marine biota II-3-3 Toxicological effects of POPs in the marine biota 17 II-3-4 Bioindicator of marine contamination 17 III-4 Implication for humans 20 II-4-1 POP exposure for humans ... environment and human health The objective of this research was to investigate the occurrence of POPs in Singapore’s marine biota, the bioaccumulation mechanisms in a...

Ngày tải lên: 16/09/2015, 17:13

... study the degradation behavior in ultrapure water, drinking water, rain water, river water and seawater under various pH and irradiation sources (sunlight, darkness, indoor incandescent lighting and ... propham (66 %), which probably underwent thermal degradation under the extraction conditions The results indicate that although carbamates tested in this study are thermally...

Ngày tải lên: 16/09/2015, 17:13

... freedom for the assignment of the variables under consideration The assignment of the main variables (A, B, C and D), two-variable interaction, and the level setting values of the main variables ... optimization of the MAE conditions To apply these techniques in practical applications, in this chapter I 138 demonstrated the application of these techniques...

Ngày tải lên: 16/09/2015, 17:13

... 88 An interesting result observed from Fig 4- 6 is that in the same solvent, the recovery increases in going from PAHs to PCBs, and then to triazines (i.e, increasing polarity of analyte) The recovery ... 88.1±3.7 89.8±3.2 91 .4 3.0 93.5 4. 5 41 .0±3.8 18 .4 4. 0 10 80.0±3.6 84. 2 4. 5 89.2±5.0 90.2 4. 0 93.2±2.9 94. 6±3.7 36.8±2.8 15.2±2 .4 15 79 .4 5.0 84. 6±3.6 86.6±3.6 87...

Ngày tải lên: 16/09/2015, 17:13

... 160.9 31 8.2 250.6 53. 3 3. 07 2.1 1. 43 60 52 45 * at pH 10.5, units of k and t1/2 are s-1 and s, respectively a incandescent lighting 64 3. 3 .3 Degradation of Propoxur in Natural Water In order to provide ... light intensity affects the K and t½ in each natural water sample K increases and t½ decreases accordingly when the light intensity increases in the ord...

Ngày tải lên: 16/09/2015, 17:13

... levels of the target analysts in soil samples before spiking 2. 3 .2. 2 Freshly spiked soils Freshly spiked soil samples were prepared by adding an appropriate volume of spiking solutions into the ... possible traces of PAHs, PCBs, triazines, carbamates and other organic contaminants, 100 g of each of the soil sample was immersed in 20 0 ml 46 each of methanol,...

Ngày tải lên: 16/09/2015, 17:13

... From Table 1- 5, it can be seen that various classes of pesticides have been determined by employing either LC-ESI-MS [11 1 -11 7, 12 1, 12 3] or LC-APCI-MS [11 8, 11 9, 12 2] The combination of SPE with ... ESI–PI–MS 5 10 11 6 GW off-line, 1L, SPE, ESI–NI–MS 5 10 11 5 SW off-line, 0.2L, SPE, ESI–PI–MS 20–30 11 7 Imidazolinone DW off-line, 2L, SPE, ESI–PI–MS about 11 3 Phenoxy...

Ngày tải lên: 16/09/2015, 17:13

... a method of quantifying variability and uncertainty in risk A tiered approach to PRA is recommended for Superfund sites, beginning with a point-estimate analysis or deterministic risk assessment, ... data used in the model, the more representative the model output can be of land application at field scales The intent of introducing this approach is to encourage all involve...

Ngày tải lên: 14/02/2014, 03:20

... THE DEVELOPMENT AND STUDY OF TITANIUM DIOXIDE BASED BUOYANT COMPOSITE PHOTOCATALYSTS FOR IMPROVED APPLICATIONS IN PHOTOCATALYTIC DEGRADATION OF ORGANIC POLLUTANTS IN AQUEOUS SOLUTIONS ... provide some preliminary information about the combination of the buoyant composite photocatalyst with an adsorbent component and the performance of...

Ngày tải lên: 10/09/2015, 15:50

... Captain Budd Christman Humpback whale www.photolib.noaa.gov/animals/anim0800.htm POPs PERSISTENT ORGANIC POLLUTANTS (POPs) INDUSTRIAL CHEMICALS PCBs HCB PESTICIDES Aldrin Dieldrin Chlordane DDT Endrin ... products, and direct exposure during use (e.g., from furniture) Ref: •www.epa.gov/oppt/pbde/ POPs Semi -persistent organic pollutants PAHs Phthalate esters PBDEs PCNs BPA Alky...

Ngày tải lên: 14/02/2014, 03:20

... Module 7: Ethical Issues in Environmental and Occupational Health 185 Case Study 4: Part In arguing that worker health is not improving, Herbert and Landrigan make a number of ethical and scientific ... 7: Ethical Issues in Environmental and Occupational Health 168 Four Case Studies on Environmental- Health Controversies In order to determine how the...

Ngày tải lên: 17/02/2014, 10:20

... uncertainty about the mechanisms whereby smoke causes emphysema and airway disease Oxidative stress may be a component, as oxidizing radicals are present in tobacco and biomass smoke and are released ... disease from indoor air pollution in India In: Raw G, Aizlewood C, Warren P, eds Indoor Air 99, the 8th International Conference on Indoor Air Quality and Climate...

Ngày tải lên: 17/02/2014, 22:20

... the literature are presented in several ways without standardization The maintenance of a central database of all analytical data on the persistent organic pollutants would greatly aid in determining ... concentrations of persistent organic pollutants is rapidly increasing Taken together, these data and models have allowed an understanding of the environmental fate and t...

Ngày tải lên: 14/03/2014, 19:20

... Organisation World Meteorological Organization Guidance for a Global Monitoring Programme for Persistent Organic Pollutants, UNEP Guidance for a Global Monitoring Programme for Persistent Organic Pollutants, ... are: Africa; Asia and the Pacific; Central and Eastern Europe; Latin America and the Caribbean; and Western Europe and North America 14 Guidance...

Ngày tải lên: 14/03/2014, 19:20