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51.
Wang Shuai Chang Hanyu Dong Zhenfei Ren Yansen Tan Tianle Deng Hui 《Environmental science and pollution research international》2023,30(8):20223-20234
Environmental Science and Pollution Research - Saline-sodic soil is widely distributed around the world and has induced severe impacts on ecosystems and agriculture. Biomass pyrolysis fluid (BPF),... 相似文献
52.
Uemura H Arisawa K Hiyoshi M Satoh H Sumiyoshi Y Morinaga K Kodama K Suzuki T Nagai M Suzuki T 《Chemosphere》2008,73(1):30-37
OBJECTIVE: The objective was to grasp the recent body burden levels of polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) and dioxin-like polychlorinated biphenyls (DL-PCBs) and to investigate their determinants among general inhabitants in Japan. METHODS: This study was performed on 1374 participants aged 15-73 years, who were not occupational exposure to PCDDs/PCDFs and DL-PCBs, living widely in 75 different residential areas of 25 prefectures in Japan. Seven PCDDs, ten PCDFs, twelve DL-PCBs, which are assigned a toxicity equivalent factor, and biochemical factors were determined in fasting blood. A questionnaire survey on life-style was also performed. RESULTS: The median of total toxicity equivalent (TEQ) was 20pgTEQ/g lipid. The TEQs of PCDDs/PCDFs, DL-PCBs and total TEQ increased with age. The intake frequency of fish-and-shellfish was positively associated with the TEQ of DL-PCBs in both sexes. Current smoking was negatively related to the TEQ of DL-PCBs in male subjects but not in female subjects. Feeding status was significantly related to the TEQs of PCDDs/PCDFs, DL-PCBs and total TEQ, being lowest in breast feeding and highest in never and bottle feeding. According to the results of subgroup analysis, parity was not associated with the TEQs. CONCLUSIONS: The fish-and-shellfish consumption may contribute to the accumulation of DL-PCBs, and smoking may induce some biological action for the elimination of DL-PCBs from the human body. Breast feeding is considered to be one of the major excretory pathways of PCDDs/PCDFs and DL-PCBs in women, while parity may not largely contribute to the elimination of these pollutants. 相似文献
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One important aspect of the urban environment is its sound environment, in which the sound environment of street areas plays a significant role. In this research, we employed methods of subjective image evaluation and spatial analysis of soundscape formation, in studying the sound environments of urban street areas. In Saga City, Japan, we analysed the structure and main sound components of urban street areas, as well as the sound pressure levels through on-site investigation. Through image evaluation, we obtained people's ratings of each sound component in terms of “preference” and “congruence”. Simultaneously, we interviewed people on site for their evaluation of the sound environment using semantic differential profiles. Lastly, we performed a spatial analysis of the site, identifying the different types of street sound environment and their characteristics using cluster analysis, as well as noting the interaction of auditory image and visual factors. The methods presented by this research can help us understand the sound environment of urban street areas more comprehensively and vividly, and to point out a unique direction in the research of urban sound environment as well as the planning of urban street areas. 相似文献
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Dioxin-like potencies and extractable organohalogens (EOX) in medical, municipal and domestic waste incinerator ashes in Japan 总被引:9,自引:0,他引:9
Ash samples collected from medical, municipal and small-scale domestic incinerators in Japan were tested for dioxin-like activity using bioassay technique (ethoxyresorufin-O-deethylase: EROD assay) and for extractable organohalogens (EOX) using instrumental neutron activation analysis in order to estimate potential toxicity and responsible chemicals in those samples. Crude extracts and fractions cleaned-up for dioxin analysis from the samples were used for the analysis. The ranges of dioxins in the ashes were between 2.23 and 12.29 ng TEQ/g (dry weight). Relative potency ranges estimated by EROD assay in the medical incinerator ashes were 3.8-17.6 times higher than the results of conventional chemical analysis. EOX analysis suggested that ash samples contained plenty of organochlorine compounds apart from chlorinated dioxins. In addition, medical waste incinerator ashes were considered to have relatively higher amount of organoiodine compounds. In the cleaned-up fractions, bioassay potency ranges were lower than those in the crude extracts. However, some samples still exhibited higher potency than expected from chemical analysis. Though some polycyclic aromatic hydrocarbons were found in the fractions, the amounts were relatively low (0.39-10.56 ng/g). The results imply that some bioactive organohalogens that cannot be detected in the conventional chemical analysis might have potential for dioxin-like toxicity, and contribute to higher bioassay activities. The combination of the chemical analysis with the bioassay and EOX provides rough figure of dioxin-like toxicity and suggests types of organohalogen compounds that should be identified as a part of dioxin analysis for control emission from an incineration plant. 相似文献
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Kojima Yoichiro Nakakubo Ryoh Iwabuchi Kazunori 《Journal of Material Cycles and Waste Management》2022,24(1):311-320
Journal of Material Cycles and Waste Management - This paper describes the clarification of the critical organic load and the inhibition factors of thermophilic dry methane co-fermentation of... 相似文献
59.
Fu Hanyu Zhang Chunyun Wang Yuanyuan Chen Guofu 《Environmental science and pollution research international》2022,29(29):43745-43757
Environmental Science and Pollution Research - As the eutrophication of natural water bodies becomes more and more serious, the frequency of outbreaks of harmful algal blooms (HABs) mainly formed... 相似文献
60.
Jiao Wei Niu Yong Zhou Junyu Zhang Hanyu Song Hongli Li Kai 《Environmental science and pollution research international》2022,29(12):17062-17071
Environmental Science and Pollution Research - The bioavailable trace metals are closely related to environmental safety and human health, which might have different source characteristics from the... 相似文献