新技术环境下都市女性的媒介素养——以女性时尚类电子杂志为例     

侯公涛  郭文建  蒋友胜 《新闻爱好者》2008,(3):10-11

都市女性作为社会公民的重要组成部分,不但承担着繁衍生息的责任,还肩负着教育后代的使命。都市女性的媒介素养直接关系到下一代能否健康成长。因此,在新传播技术日新月异、传播内容无孔不入的今天,不断提升都市女性的媒介素养,发挥新媒介的良好作用,是信息化社会发展的必然结果。也是建设和谐文明社会的内在要求。在对新技术环境下都市女性媒介素养的研究中,以女性时尚类电子杂志为例,分析都市女性的形象,然后对存在的问题进行解读,最后探讨提升都市女性媒介素养的策略。  相似文献   

我国某水域海水养殖鱼和淡水养殖鱼中二噁英污染特征的比较研究     

张建清  蒋友胜  周健  姜杰  庄志雄  吴永宁 《深圳特区科技》2005,2(Z1):155-159

目的对我国某水域的海鱼和淡水鱼样品开展二噁英污染水平与同系物轮廓表征研究,并评估该典型地区人群通过鱼暴露二噁英的膳食摄入量.方法通过布点抽样采集8个养殖点(海水与淡水各半)31份样品,以同位素稀释的HRGC/HRMS-多离子检测方式测定样品中的PCDDs/Fs.结果海水养殖鱼和淡水养殖鱼中PCDD/Fs平均浓度以湿重计分别为1.43和3.34pg/g,以WHO-TEQ计分别为0.28pg/g和0.43pg/g.OCDD、2,3,7,8-TCDF为最主要的优势污染同系物;如以毒性的主要贡献者计,则以1,2,3,7,8-PeCDD、2,3,4,7,8-PeCDF、2,3,7,8-TCDD为主.该地区人群摄入鱼的二噁英PCDD/Fs的平均膳食暴露量的估算是0.63pgWHO-TEQ/kg BW·day.结论该水域中的鱼已受到了一定程度的PCDD/Fs污染,淡水养殖高于海水养殖(约为1倍).鱼体中所检测到的二噁英污染的平均水平低于欧盟制定的限量标准(1.0pg WHO-TEQ/g).  相似文献   

我国某水域海水养殖鱼和淡水养殖鱼中二噁英污染特征的比较研究     

张建清  蒋友胜周健 姜杰庄志雄  吴永宁 《深圳特区科技》2005,(11):155-159

目的：对我国某水域的海鱼和淡水鱼样品开展二噁英污染水平与同系物轮廓表征研究，并评估该典型地区人群通过鱼暴露二噁英的膳食摄入量。方法：通过布点抽样采集8个养殖点（海水与淡水各半）31份样品，以同位素稀释的HRGC／HRMS-多离子检测方式测定样品中的PCDDs／Fs。结果：海水养殖鱼和淡水养殖鱼中PCDD／Fs平均浓度以湿重计分别为1.43和3．34pg／g，以WHO-TEQ计分别为0．28pg／g和0．43Pg／g。OCDD、2,3，7，8-TCDF为最主要的优势污染同系物；如以毒性的主要贡献者计，则以1，2，3，7，8-PeCDD、2，3，4，7，8-PeCDF、2，3，7，8-TCDD为主。该地区人群摄入鱼的二噁英PCDD／Fs的平均膳食暴露量的估算是0．63PgWHO-TEQ／kg BW-day。结论：该水域中的鱼已受到了一定程度的PCDD／Fs污染，淡水养殖高于海水养殖（约为1倍）。鱼体中所检测到的二噁英污染的平均水平低于欧盟制定的限量标准（1．0PgWHO-TEQ／g）。  相似文献   

用同位素稀释的气相色谱/高分辨质谱联用测定中国珠江流域鱼体中氯化二苯并二噁英和氧化二苯并呋喃     

张健清  周健  蒋友胜  江洁  庄志雄  刘晓明  吴勇宁 《深圳特区科技》2005,(Z1):130-135

Objective:PCDD/Fs level in 22 fish samples was investigated in Pearl river Delta area in order that the PCDD/Fs pollution level in common fish can be evaluated. Methods: Dibenzo-p-Dioxins and Dibenzo-Furans was extracted from the sample by Soxhlet extraction, concentrated then purified by column chromatography, carbon column enrichment,. Confirmation and quantitative analysis at ppt(pg/g) level of PCDD/Fs was performed by HRGC/HRMS using multiple ion detection mode(MID). Certified reference material using Proficiency test sample fish muscle test material 0613 that was obtained from Central Science Laboratory(CSL) in Britain. Results: The average of concentration in wet weight is 1.261 ng/kg,, the average total WHO-TEQ for 22 samples is 0.246ng/kg wet weight. Generally, OCDD, 2,3,7,8-TCDF,1,2,3,4,6,7,8-HpCDD was the main contributors to the total 17 PCDD/Fs detected, average account for 21%,16%,14%, respectively. While 1,2,3,7,8-PeCDD, 2,3,4,7,8-PeCDF, 2,3,7,8-TCDD were main contributors to the total WHO-TEQ, account for 40%,27%,13% respectively. The total TEQ for 22 fishes ranged from 0.03ng/kg wet weight to 0.878 ng/kg wet weight. Conclusions: PCDD/Fs level was largely different from sample to sample depending on the sample kinds. The level in the Pearl river Delta area fish samples is not distinct comparing with other countries, but some kind fish level should be paid more attention on it since its higher level. The relationship between source of PCDD/Fs and PCDD/Fs level in fish will be studied deeply in the future.  相似文献