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171.
Study on water quality and genotoxicity of surface microlayer and subsurface water in Guangzhou section of Pearl River 总被引:1,自引:0,他引:1
Jiang Yu Wai-tim Ho Hui-ming Lu Yu-feng Yang 《Environmental monitoring and assessment》2011,174(1-4):681-692
In order to understand the water quality and the genotoxicity of various surfaces in the Guangzhou section of the Pearl River during January to December of 2008, we investigated and studied the current water situation of the surface microlayer (SML) and the subsurface water (SSW) in Guanzhou section (Zhongda Dock and Yuzhu Dock) of the Pearl River by chemical analysis and biological monitoring method (Vicia faba micronucleus test). The results showed that during these months concentrations of the indexes of the two docks water such as total nitrogen (TN), total phosphorus (TP), chemical oxygen demand (COD) exceeded the national III level of surface water quality, and the indexes of SML were much higher than the ones of SSW (P?< 0.05), and the exceeding rate of TN, TP of SML was 100%. According to the eutrophic evaluation standard, the water bodies of SML and SSW in the two docks were in a eutrophication during these months. The eutrophication and pollution of SML was more serious, and the highest index of eutrophication (E value) was up to 81.9, which also had obvious difference with COD and TP (P?< 0.05). The water of SML in the two docks enriched to N, P, and chlorophyll a (Chl. a) seriously, and the enrichment factor of SML in Zhongda Dock to N, P, and Chl. a was 0.71 ?? 2.78, 0.98 ?? 1.18, and 0.49 ?? 13.99, respectively, and the one in the Yuzhu Dock was 1.09 ?? 1.52, 1 ?? 1.14, and 0.72 ?? 4.07, respectively. Through inspecting the water genotoxicity of various layers by V. faba micronucleus test, we could know that the average annual MCN?? of SML and SSW in the two docks was 6.09??, 5.53??, 5.57??, and 5.249??, respectively. In general, the above value of SML was a little higher than the one of SSW, but there was not a remarkable difference (P?> 0.05). This research shows that the water quality in a medium to heavy eutrophication in the Guangzhou section of Pearl River belongs to national III ?? IV level, and SML has the capability of enrichment to the pollutants such as N and P and induces the increase of micronucleus rate of V. faba tip cell. The study also indicates that there may be genotoxicity matters such as N, P in water body. 相似文献
172.
Yuhshan Ho 《环境科学学报(英文版)》2014,26(12):2571-2572
Recently, ling et al. (2013) published the paper entitled as above. In Section 2.3, Adsorption kinetics of MBT, authors noticed that "The pseudo first-order kinetic model (Eq. (1)) and the pseudo second-order kinetic model (Eq. (2))" were used (Do,an et al., 2007; Eftekhari et al., 2010): 相似文献
173.
Inactivation effect of pressurized carbon dioxide on bacteriophage Qβ and ΦX174 as a novel disinfectant for water treatment 总被引:1,自引:0,他引:1
Huy Thanh Vo Tsuyoshi Imai Truc Thanh Ho Masahiko Sekine Ariyo Kanno Takaya Higuchi Koichi Yamamoto Hidenori Yamamoto 《环境科学学报(英文版)》2014,26(6):1301-1306
The inactivation effects of pressurized CO2 against bacteriophage Qβ and ΦX174 were investigated under the pressure of 0.3–0.9 MPa, initial concentration of 107–109PFU/mL, and temperature of17.8°C–27.2°C. The optimum conditions were found to be 0.7 MPa and an exposure time of 25 min. Under identical treatment conditions, a greater than 3.3-log reduction in bacteriophage Qβ was achieved by CO2, while a nearly 3.0 log reduction was observed for phage ΦX174. The viricidal effects of N2O(an inactivation gas with similar characteristics to CO2), normal acid(HCl), and CO2 treatment with phosphate buffered saline affirmed the chemical nature of CO2 treatment. The pumping cycle, depressurization rate, and release of intracellular substances caused by CO2 were its viricidal mechanisms. The results indicate that CO2 has the potential for use as a disinfectant without forming disinfection by-products. 相似文献
174.
Chung Song Ho Jianfei Peng UnHyok Yun Qijun Zhang Hongjun Mao 《Frontiers of Environmental Science & Engineering》2022,16(9):121
175.
Lo Chen-Chen Liu Wen-Te Lu Yueh-Hsun Wu Dean Wu Chih-Da Chen Ting-Chieh Fang Yu-Ting Lo Yu-Chun Chen You-Yin Kang Lo Tsai Cheng-Yu Lee Yueh-Lun Chuang Kai-Jen Ho Kin-Fai Chang Ta-Yuan Chuang Hsiao-Chi 《Environmental science and pollution research international》2022,29(35):52355-52366
Environmental Science and Pollution Research - The effects of air pollution on sleep and dementia remain unclear. The objective of this study was to investigate the effects of air pollution on... 相似文献
176.
Ong Yong-Por Ho Li-Ngee Ong Soon-An Ibrahim Abdul Haqi Banjuraizah Johar Thor Shen-Hui Lee Sin-Li Teoh Tean-Peng 《Environmental science and pollution research international》2022,29(54):81368-81382
Environmental Science and Pollution Research - To enhance dye removal and energy recovery efficiencies in single-pair electrode photocatalytic fuel cell (PFC-AC), dual cathodes PFC (PFC-ACC) and... 相似文献
177.
178.
Ka‐Man Lai Claudia Ramirez Weilong Liu Darina Kirilova David Vick Joe Mari Rachel Smith Ho‐Yin Lam Afshin Ostovari Akifumi Shibakawa Yang Liu Sidharth Samant Lucky Osaro 《Disasters》2015,39(4):648-664
By interpreting disasters as opportunities to initiate the fulfilment of development needs, realise the vulnerability of the affected community and environment, and extend the legacy of relief funds and effort, this paper builds upon the concept linking relief, rehabilitation and development (LRRD) in the sanitation sector. It aims to use a composite of case studies to devise a framework for a semi‐hypothetical scenario to identify critical components and generic processes for a LRRD action plan. The scenario is based on a latrine wetland sanitation system in a Muslim community. Several sub‐frameworks are developed: (i) latrine design; (ii) assessment of human waste treatment; (iii) connective sanitation promotion strategy; and (iv) ecological systems and environmental services for sanitation and development. This scenario illustrates the complex issues involved in LRRD in sanitation work and provides technical notes and references for a legacy plan for disaster relief and development. 相似文献
179.
180.
Estimate of zearalenone exposure through the intake of white and brown rice in the Korean population
Rice samples (n = 482) harvested for 2010–2012 in South Korea were analyzed for zearalenone content by high-performance liquid chromatography and fluorescence detection. The exposure of the Korean populations was assessed by a deterministic approach. Because the proportion of non-detectable results was >80% in white rice but less than <60% in brown rice, the zearalenone levels for white rice were reported as 0.52 µg kg?1 as lower bound and 2.54 µg kg?1 as upper bound, while for brown rice the middle bound value was 13.9 µg kg?1. The average dietary intake of zearalenone from white and brown rice by the Korean population was estimated to be 1.5 ng kg?1 body weight (bw) day?1 each. For heavy consumers, the average intakes were 18.5 and 10.1 ng kg?1 bw day?1, respectively. The age groups with the highest zearalenone intake were 1–2-year-old children for white rice and 3–6-year-old children for brown rice. Overall, the dietary exposure of the Korean population to zearalenone from white and brown rice was found to be lower than the provisional maximum tolerable daily intake of 0.5 μg kg?1 bw day?1. 相似文献