Locations In Vietnam Research Articles

Dioxin and dibenzofuran levels in human blood samples from Guam, Russia, Germany, Vietnam and the USA

Analyses of general population human blood from various geographical locations for polychlorinated dibenzodioxins (PCDD) and polychlorinated dibenzofurans (PCDF) were performed to compare levels of human and environmental contamination at the present time. Pooled or individual samples of blood from adults (usually over the age of 40) were collected in a number of selected locations including St. Petersburg, in western Russia; Baikalsk in Russia's eastern Siberia; and Guam, a South Pacific island. These are compared to previous data from West Germany. America and various locations in Vietnam. Seven hundred and fifty-five blood specimens were collected, 68 from Russia, 10 from Guam, 475 from Vietnam, 102 from Germany and 100 from the USA. Individual dioxin analyses were performed for samples from Guam and Germany; pooled blood was analyzed from the other locations. The German data includes mean, standard deviation, median, and range for each congener; mean values are also presented for Guam and Vietnam.

Residue pattern and dietary intake of persistent organochlorine compounds in foodstuffs from Vietnam.

Concentrations of polychlorobiphenyls (PCBs), hexachlorocyclohexane isomers (HCHs), DDT compounds (DDTs), hexachlorobenzene (HCB), aldrin, dieldrin, heptachlor and heptachlor epoxide were determined in foodstuffs collected from different locations in Vietnam. Elevated levels of PCBs, DDTs, HCHs, and aldrin and dieldrin were found in animal fat, butter, meat, and seafood. Caviar and butter samples imported from the Soviet Union contained considerably higher amounts of PCBs, HCHs and DDTs. The average daily intake of some organochlorines by Vietnamese people were higher than those observed in most of the developed nations. The dietary intake of DDTs was the highest among various chemicals studied. Interestingly, the daily dietary intake of PCBs was comparable to those in developed countries. Fish, shellfish, prawn, and crab were the primary route of DDTs to humans, whereas cereals and vegetables were the predominant sources of PCBs and HCHs.

Dioxins, dibenzofurans and selected chlorinated organic compounds in human milk and blood from Cambodia, Germany, Thailand, the U.S.A., the U.S.S.R., and Vietnam

This paper reports general population blood polychlorinated dioxin and dibenzofuran (PCDD/F) levels for various geographical regions in the north and south of Vietnam in pooled samples from 112 persons, the results of 85 individual analyses of blood from Germany, and levels from a pool of whole blood from 100 U.S. residents. This paper also presents selected population data for PCDD/Fs and certain other chlorinated chemicals such as PCBs and other chlorinated xenobiotics in human milk from locations in Vietnam, Cambodia, and Thailand. These represent new samples from seventy persons from the general population from three less industrialized Asian countries; these are compared with our previous findings from several hundred persons from Germany, the Soviet Union, and the United States.