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豆芽菜三个标准的比较分析 被引量:4
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作者 张德纯 刘中笑 +1 位作者 林源 卞海东 《中国蔬菜》 北大核心 2010年第3期12-14,共3页
现行的有关豆芽菜的质量安全标准有三个,所规定的检测指标及其检出限量指标各不相同,不同程度地存在不完备性和滞后性,导致检测结果大相径庭,不仅使检测者、生产者、消费者无所适从,也使豆芽菜生产存在了潜在的安全隐患。
关键词 质量安全标准 豆芽菜 检测指标 不完备性 检测结果 安全隐患 检出限 滞后性
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Squared-like BiOCl nanosheets synthesized by ethylene glycol-assisted solvothermal method and their photocatalytic performance
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作者 胡家佳 刘家琴 +3 位作者 阮丽丽 卞海东 张信义 吴玉程 《Optoelectronics Letters》 EI 2015年第1期5-9,共5页
Bismuth oxychloride(Bi OCl) with morphology of squared-like nanosheet is synthesized by solvothermal method using ethylene glycol aqueous reaction solution. The product is characterized by X-ray powder diffraction(XRD... Bismuth oxychloride(Bi OCl) with morphology of squared-like nanosheet is synthesized by solvothermal method using ethylene glycol aqueous reaction solution. The product is characterized by X-ray powder diffraction(XRD), scanning electron microscopy(SEM), energy dispersive spectroscopy(EDS), transmission electron microscopy(TEM) and ultraviolet-visible(UV-Vis) diffuse reflection spectroscopy, respectively. The layered structure, the hydrogen bonding between hydroxyl groups and their selective adsorption cause the formation of the squared-like nanosheets. The photocatalytic degradation activity of the as-prepared Bi OCl is tested by the degradation of methyl orange under UV light irradiation. Repeating the degradation process four times under the same condition, the results show that the squared-like Bi OCl nanosheets present high photocatalytic activity and stability. 展开更多
关键词 photocatalytic titania coated copolymer irradiation methylene shells photocatalyst ultraviolet template
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