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81.
Kan-atireklap S Tanabe S Sanguansin J Tabucanon MS Hungspreugs M 《Environmental pollution (Barking, Essex : 1987)》1997,97(1-2):79-89
In order to elucidate marine pollution by butyltins and organochlorine residues in coastal waters of Thailand, green mussels (Perna viridis) were collected in 1994 and 1995 and analyzed. Butyltin compounds, such as tributyltin (TBT), dibutyltin (DBT) and monobutyltin (MBT), were detected in most mussel samples, ranging from 4 to 800 ng g(-1) wet wt (as total). The composition of butyltin derivatives in green mussel was in the order of TBT > DBT > MBT. The results indicated that butyltin contamination was widespread, particularly in high boating areas and in coastal aquaculture facilities. Concentrations of organochlorine residues were much lower than of butyltin compounds. Among organochlorine residues examined, dichlorodiphenyltrichloroethane compounds (DDTs) were found to be the highest, followed by polychlorinated biphenyls (PCBs) > chlordane compounds (CHLs) > hexachlorocyclohexanes (HCHs) > hexachlorobenzene (HCB). To our knowledge, this is a first report on the detection of butyltin residues in Thailand coastal waters. 相似文献
82.
Martins Thiago Rodrigues Bertuol Daniel Assumpo Tanabe Eduardo Hiromitsu 《Journal of Material Cycles and Waste Management》2022,24(2):633-641
Journal of Material Cycles and Waste Management - Technological development has led to a growing generation of waste electrical and electronic equipment, including cables. This work concerns the... 相似文献
83.
Specific accumulation of organochlorines in human breast milk from Indonesia: levels, distribution, accumulation kinetics and infant health risk 总被引:4,自引:0,他引:4
Sudaryanto A Kunisue T Kajiwara N Iwata H Adibroto TA Hartono P Tanabe S 《Environmental pollution (Barking, Essex : 1987)》2006,139(1):107-117
This study determined concentrations of polychlorinated biphenyls (PCBs) and organochlorine compound (OC) pesticides in the milk samples of women from the general population in four locations of Indonesia. The most prevalent residues of OCs were DDTs, PCBs and hexachlorocyclohexane isomers (HCHs), whereas other OCs such as chlordane compounds (CHLs), tris(4-chlorophenyl)methane and hexachlorobenzene were lower. The levels of OCs varied between locations and individuals, with DDTs higher in suburban and rural areas than urban localities, may be due to the differences in food habits and sources between the individuals and locations. Data from Purwakarta site indicated continuing DDT exposure, which may confirm recent usage of DDT in Indonesia. A positive correlation was observed between concentration of OCs in human milk and age of mothers, primiparas women having higher OCs than multiparas, suggesting these parameters play an important role influencing the OC burdens in lactating women. Some individuals accumulated DDTs and HCHs in breast milk close to or even higher than the TDI (tolerable daily intake) guidelines proposed by Health Canada. 相似文献
84.
Contamination by arsenic and other trace elements in tube-well water and its risk assessment to humans in Hanoi, Vietnam 总被引:7,自引:0,他引:7
Agusa T Kunito T Fujihara J Kubota R Minh TB Kim Trang PT Iwata H Subramanian A Viet PH Tanabe S 《Environmental pollution (Barking, Essex : 1987)》2006,139(1):95-106
Concentrations of As and other trace elements and their association were examined in groundwater (n = 25) and human hair (n = 59) collected at Gia Lam District and Thanh Tri District, suburban areas of Hanoi, Vietnam, in September 2001. Concentrations of As in the groundwater ranged from <0.10 to 330 microg/l, with about 40% of these exceeding WHO drinking water guideline of 10 microg/l. Also, 76% and 12% of groundwater samples had higher concentrations of Mn and Ba than WHO drinking water guidelines, respectively. Arsenic concentrations in hair of residents in Gia Lam and Thanh Tri Districts (range 0.088-2.77 microg/g dry wt.) were lower than those in other As-contaminated areas of the world, but were higher than those of people in non-contaminated areas. Concentrations of As and Mn in hair of some individuals from the Gia Lam and Thanh Tri Districts exceeded the level associated with their toxicity and, therefore, a potential health risk of As and Mn is a concern for the people consuming the contaminated water in this area. Cumulative As exposure was estimated to be lower than the threshold levels at the present, which might explain the absence of manifestations of chronic As poisoning and arsenicosis in the residents of Gia Lam and Thanh Tri Districts. To our knowledge, this study revealed for the first time that the residents are exposed not only to As but also Mn and Ba from groundwater in the Red River Delta, Vietnam. 相似文献
85.
Masayuki Tanabe Atsumi Miyake 《Journal of Loss Prevention in the Process Industries》2012,25(5):809-819
This study aims to provide the approach for inherent safety design of onshore LNG plants to be applied at the very early stages (concept definition phase) of the project development. Onshore LNG plant development project starts from the “Concept Definition” phase, where financial feasibility is estimated and major conditions, such as site location and plant foot print, are set.The inherent safety design basic criteria and design measures should be identified and selected when setting the basic conditions during the Concept Definition phase of the project development, such as the site location (relative location from populated areas), site condition (prevailing wind direction) and plant production capacity (number of process train, number of product tanks). The safety measures, which are usually not fully developed at the project early stages in the current design execution practices, are the emergency systems, which mitigate an accident escalation, the modularized plant and layout, and the tank selection.The inherent safety design measures discusses in this paper were identified based on the categories of plot plan, emergency system, and module plant application.The proposed approach will contribute to improve inherent safety design of onshore LNG plants and it will also yield schedule and cost benefits. 相似文献
86.
Ueno D Watanabe M Subramanian A Tanaka H Fillmann G Lam PK Zheng GJ Muchtar M Razak H Prudente M Chung KH Tanabe S 《Environmental pollution (Barking, Essex : 1987)》2005,136(2):303-313
In order to elucidate the global distribution of dioxins and related compounds, such as PCDDs, PCDFs and coplanar PCBs, levels of these compounds were determined in the muscle of skipjack tuna (Katsuwonus pelamis) collected from the offshore waters and open seas near Japan, Taiwan, Philippines, Indonesia, Seychelles and Brazil, and the Japan Sea, the East China Sea, the South China Sea, the Indian Ocean and the North Pacific Ocean. PCDDs, PCDFs and coplanar PCBs were detected in almost all the specimens collected from all the locations surveyed, indicating widespread contamination by these compounds in the marine environment. Higher concentrations of dioxins and coplanar PCBs were detected in the samples from temperate Asian regions, plausibly due to larger usage and anthropogenic generation in highly industrialized countries around the East China Sea and the South China Sea, such as Japan, Korea, Taiwan, Hong Kong and coastal China. 相似文献
87.
Trace elements accumulation in edible tissues of five sturgeon species from the Caspian Sea 总被引:1,自引:0,他引:1
Pourang N Tanabe S Rezvani S Dennis JH 《Environmental monitoring and assessment》2005,100(1-3):89-108
This study is focused on twenty trace elements (Ag, Ba, Bi, Cd, Co, Cr, Cs, Cu, Ga, In, Mn, Mo, Pb, Rb, Sb, Sn, Sr, Ti, V, Zn) accumulation in muscles of five sturgeon species (Acipenser guldenstaedti, A. persicus, A. nudiventris, A. stellatus and Huso huso) from the southern part of the Caspian Sea. Moreover the relationships between some biological characteristics and the levels of the selected elements as well as inter-elemental relationships were assessed. The samples (10 specimens for each the five species) were collected from two important sturgeon fishery zones located in the Iranian part of the Sea in 2002. Concentrations of the elements were determined using ICPMS. Only in the case of Cs could significant differences between two selected sampling areas be detected. There were significant differences in levels of Co, Ga, Rb, Sn, Ti, Pb and Bi in muscles of the species. Only in the case of Cd weight related differences among the species were found. The significant length dependent relationships were observed for Ga and Ba. Patterns of elements accumulation were assessed by statistical methods and compared to the other researches. In all the cases, the amounts of toxic trace elements (Cd, Cu, Pb and Zn) were markedly below the international guidelines for human consumption. 相似文献
88.
The white millipede Eucondylodesmus elegans Miyosi (Polydesmida: Doratodesmidae) secretes odoriferous droplets from the glands on both lateral surfaces of its body segments. The secretion was shown to be composed of a mixture of (1E)- and (1Z)-2-nitroethenylbenzenes (2-3 microg per millipede), identified by GC/MS analyses and synthesis. This is the first identification of these compounds as natural products. A granulated sugar block baited with the synthetic compound (more than 0.71 microg) demonstrated repellent activity against foraging wild ants, indicating that the compound functioned as a defense substance against potential predators. alpha,beta,2,3,4,5,6-d7-(1E)-2-Nitroethenylbenzene was detected by GC/MS analysis in the millipede secretion after feeding with alpha,beta,beta,2,3,4,5,6-d8-L-phenylalanine, indicating that L-phenylalanine is the precursor of these compounds. 相似文献
89.
Iwata H Tanabe S Sakai N Nishimura A Tatsukawa R 《Environmental pollution (Barking, Essex : 1987)》1994,85(1):15-33
Persistent organochlorines in air, river water and sediment samples were analysed from eastern and southern Asia (India, Thailand, Vietnam, Malaysia, Indonesia) and Oceania (Papua New Guinea and Solomon Islands) to elucidate their geographical distribution in tropical environment. The concentrations of organochlorines in these abiotic samples collected from Taiwan, Japan and Australia were also monitored for comparison. Atmospheric and hydrospheric concentrations of HCHs (hexachlorocyclohexanes) and DDTs (DDT and its metabolites) in the tropical developing countries were apparently higher than those observed in the developed nations, suggesting extensive usage of these chemicals in the lower latitudes. CHLs (chlordane compounds) and PCBs (polychlorinated biphenyls) were also occasionally observed at higher levels in the tropics, implying that their usage area is also expanding southward. Distribution patterns of organochlorines in sediments showed smaller spatial variations on global terms, indicating that the chemicals released in the tropical environment are dispersed rapidly through air and water and retained less in sediments. The ratios of organochlorine concentrations in sediment and water phases were positively correlated with the latitude of sampling, suggesting that persistent and semivolatile compounds discharged in the tropics tend to be redistributed on a global scale. 相似文献
90.
Sudaryanto A Takahashi S Iwata H Tanabe S Ismail A 《Environmental pollution (Barking, Essex : 1987)》2004,130(3):347-358
Concentration of butyltin compounds (BTs), including tributyltin (TBT), dibutyltin (DBT) and monobutyltin (MBT) and total tin (SigmaSn) were determined in green mussel (Perna viridis), 10 species of muscle fish and sediment from coastal waters of Malaysia. BTs were detected in all these samples ranging from 3.6 to 900 ng/g wet wt., 3.6 to 210 ng/g wet wt., and 18 to 1400 ng/g dry wt. for mussels, fish and sediments, respectively. The concentrations of BTs in several locations of this study were comparable with the reported values from some developed countries and highest among Asian developing nations. Considerable concentration of BTs in several locations might have ecotoxicological consequences and may cause concern to human health. The parent compound TBT was found to be highest than those of its degradation compounds, DBT and MBT, suggesting recent input of TBT to the Malaysian marine environment. Significant positive correlation (Spearman rank correlation: r2=0.82, P<0.0001) was found between BTs and SigmaSn, implying considerable anthropogenic input of butyltin compounds to total tin contamination levels. Enormous boating activities may be a major source of BTs in this country, although aquaculture activities may not be ignored. 相似文献