Advanced Materials Research Vols. 807-809

Abstract: CORMIX obtaining the approval from USEPA is widely used in the environmental evaluation of US inland nuclear power plants. Carry out 3-d simulation for the low level radioactive liquid effluent released from an inland nuclear power plant in rivers through surface by CORMIX. Compare the diluent effect of different discharge capacity (2 and 4 units) and different season (summer and winter). Dilution ratios of these four simulation conditions are all reach 10 at 500m downstream. The 0.1C₀ isoconcentration line range of four units is much larger than two units. It is found from the concentration distribution of cross-section at 1km downstream that the diffusing vertically of effluent in summer is better than it in winter. The accuracy of the software will be confirmed by actual measurement.

Abstract: Sorbent tubes, which are packed with active carbon and Tenax-TA, used to sample the non-polar volatile organic compounds (VOCs) in ambient air, are widely accepted for its simple method, high repeatability and stability. In this paper we reported a method to prepare the standard sorbent tubes loaded with VOCs components, which is based on ISO 6145. The standard VOCs mixture gasses are generated by a dynamic volumetric diffusion or permeation method and a mass flow control pump sample system. Experiments indicate that the standard sorbent tubes have a good repeatability, linearity and stability, which are expected being used as certified reference materials in China.

Abstract: A method for the detection of PAEs (16 kinds ) in the childrens products using ultrasonic extraction and gas chromatography were investigated in this study. The method was linear between 0.500 and 10.000 μg ml^-1, R² between 0.995 and 0.999, LOQ between 0.704 and 1.585 μg ml^-1. The method repeatability was between 1.2% and 13% RSD. The experiment results showed that the children's products samples containing different kinds of PAEs. DIBP and DCHP were frequency found in all sample. The PAEs concentration of the childrens products sample was between 0.019 and 6.301 μg ml^-1.

Abstract: The concentrations of five different kinds of environmental hormone which including nonyl phenol, bis-phenol A, methyltestosterone, megestrol and diethylstilbestrol in aquaculture seawater of Shenzhen have been studied. Their risk quotients (RQ) are calculated to evaluate the risk to seawater pollution. The results showed that the RQs for the five environment hormones are nonyl phenol (0 - 0.07), bis-phenol (0-2.15), methyltestosterone (0.17), diethylstilbestrol and megestrol (not found). Bis-phenol belongs to chronic potential ecological risk in the water and sediment. The purpose is to provide clues for improving Chinese Eco-risk assessment techniques and thus to enhance security of mariculture in China.

Abstract: This study was conducted using the data collected at the Anping Harbor, Taiwan to investigate and analyze cadmium (Cd) contained in the sediments, and to evaluate the accumulation of Cr and the degree of its potential risk. The results show that samples collected at ten monitoring points contain 0.040.60 mg/kg of Cd with an average of 0.26±0.18 mg/kg. The spatial distribution of Cd reveals that the Cd concentration is relatively high in river mouth region, and gradually diminishes toward the harbor region. This indicates that upstream industrial and municipal wastewater discharges along the river bank are major sources of pollution. Results from the enrichment factor and geo-accumulation index analyses imply that the Bamboo River mouth sediments can be characterized as moderately severe enrichment and moderate accumulation of Cd, respectively. Results of potential ecological risk index indicate that the surface sediment has higher ecological potential risk in Bamboo River mouth. The results can provide valuable information to developing future strategies for the management of river mouth and harbor.

Abstract: According to the current national standard and guidelines, the paper evaluates the quality assurance procedures and requirements for the calibration of particulate matter continuous emission monitoring systems (PM-CEMS). The effect of the experimental variables such as flue gas conditions, concentrations range, additional data consistency, correlation coefficient, calibration model, confidence intervals and tolerance interval on the reliability of CEMS are presented.

Abstract: Pot experiment was conducted with the cutting seedlings of Ilex kudingcha C. J. Tseng. By adding lead, copper solution and self-exist zinc in soil, we conducted the research for the phytoavailability of heavy metal in the different soil situation. The characterization methods of the phytoavailability were investigated. Results show that lead, copper and zinc are the strong absorption elements from BAC (Biological Absorption Coefficient) averages of 13 groups experiment. The order of BAC averages is lead > copper > zinc. 0.05mol/L EDTA-2Na can be used as the extracting agent of lead or copper, 0.1mol/L HCl can be used as the extracting agent of zinc. They can be used for the characterization methods about the phytoavailability of lead, copper, zinc in soil by the single extraction method. 0.1mol/L HC1 is adopted to extract soil, and weighted ion impulse of the lead, copper, zinc in the extraction fluid is calculated, which can well simultaneously characterize the phytoavailability of heavy metal lead, copper, zinc in kudingcha soil.

Abstract: The content of copper, lead, zinc and cadmium in 45 samples of city soils were determined by the method of a stripping voltammetry. Results are compared with maximum permissible concentration of analyzed metals. Existent level of pollution of soils by heavy metals was characterized and its ecological assessment was given.

Abstract: The distribution characteristics of six typical antibiotics in the aquatic environment (wastewater treatment plant effluent, Shiao-ching River, Yellow River, Yellow river Reservoir, drinking water treatment plant effluent) of a city in china were analyzed by using high performance liquid chromatography-tandem mass spectrometry. The results show that except for erythromycin, other five antibiotics include sulfamethoxazole, sulfamethazine, amoxicillin, tetracycline and oxytetracycline were detected in the aquatic environment, the concentrations of tetracycline and oxytetracycline were relatively higher, the tetracycline and oxytetracycline concentrations of wastewater treatment plant effluent were 32.39 ng/L and 59.36 ng/L respectively. The wasterwater treatment plant process can not completely remove the antibiotic,and the five antibiotics concentrations in the wastewater treatment plant effluent were higher than their concentrations in the other water bodies. A certain content antibiotics was discharged into the receiving water and wastewater treatment plant drainage is the main way of antibiotics to release into the water environment. Traces of antibiotics were detected in the water samples which were taken from the Yellow River and the Shiao-ching River in the city, but they were less polluted by antibiotics levels. The antibiotics removal effect of conventional drinking water treatment process is not obvious.

Abstract: Abandonment of «Avangard» Coal Mine and its Flooding Caused the Decrease of Natural Waters Quality and Caused a Threat of that Area’s Pollution. Statistical Analysis Showed that due to Transfusion of Various Horizons Waters, close Dependencies between the Quality of Mine Waters, River/well Waters and Soil Solutions are Observed. Mine Waters are Transforming Not only the Composition of Natural Waters and Wells but have Great Impact on the Composition of Soil Solution. Growing Mineralization of Mine Waters Causes Active Flowing out of Chrome, Copper, Iron, Nitrates, Suspended Matters, Silicon Compounds, Sulfates, Phosphates and Sulfides. as Ph Grows, the Mobility of Chrome, Copper, Nitrates, Silicon Compounds, Sulfates and Phosphates is Decreasing. they are Consolidated in Soil.