The trends and characteristics of organochlorines pollution in surface sediments of Xiamen Western Bay

利用GC ECD对厦门西港 1 998年 7月取得的 8个站位表层沉积物中的 1 8种有机氯农药 (HCHs,DDTs)等和 1 2种多氯联苯 (PCBs)进行分析 .其中有机氯农药的浓度范围ND(未检测出 )— 0 58ng/g(其中HCHs和DDTs的含量分别为ND—0 1 4ng/g与ND— 0 0 6ng/g) ,多氯联苯的浓度为ND— 0 32ng/g ,与 1 986、1 993年的厦门西港的分析结果相比较 ,污染程度明显降低 ;说明近年来的厦门的有机污染得到逐步控制 ,也与有机物随时间推移逐渐详解有关 ,分析表明多氯联苯和有机氯农药在厦门西港有着相似的分布特征 .The contents of 18 organochlorine pesticedes and 12 polychlorinated biphenyls(PCBs) in suface sediments from Xiamen Western Bay were analyzed by GC\|ECD. The range of organochlorine pesticides was ND—0 58?ng/g,and the PCBs were ND—0 32?ng/g.Compared with the results of Xiamen Harbor in 1986 and 1993, it showed that the pollution of organochlorines decreased gradually along the time, in Xiamen Harbor became and the contamination was more slightly than that of other Harbors or Estuaries. At the same time, it was found that the geological distributions of organochlorine pesticides and PCBs, also the HCHs and DDTs were similar to each other, which indicated that the polltion was cansed by a same source

Evaluation and Fate of the Organic Chlorine Pesticides at the Waters in Jiulong River Estuary

1999 0 6,对九龙江口 1 5个站位的表层水 ,1 3个站位的间隙水进行了 1 8种有机氯农药的测定结果表明 ,有机氯农药总含量在表层水中的浓度范围为 51 3～ 2 4 79ng L ;在间隙水中的浓度范围是 2 66～ 33355ng L .对不同有机氯的含量在各站位的分布特征进行了探讨 ,发现Methoxychlor(甲氧滴涕 ) ,EndosulfanSulfate(硫酸硫丹 ) ,Endrinaldehyde(乙醛异狄氏剂 )以及EndosulfanII(硫丹 ) ,Dieldrin(狄氏剂 ) ,Deta HCH和Beta HCH 7种有机氯农药在 1 8种有机氯农药中都占主要部分 ;九龙江口的六六六的含量顺序 :β >δ α >γ ;对于滴滴涕 ,表层水中的含量 :DDE DDD >DDT ;间隙水中的含量 :DDE DDT >DDD ,二者DDE的含量都在总DDTs的 50 %以上 ,说明环境中的DDTs主要降解为DDE ;九龙江口有机氯农药随着盐度梯度 ,在河口中呈去除趋势 ;且间隙水中有机氯农药比表层水中的浓度高 ,说明其倾向于吸附在沉积物颗粒上 ,其浓度差使得有机污染物可能通过再悬浮等过程从底层向上层迁移 .九龙江口的有机氯农药污染与其他港湾相比 ,污染水平相当 ,部分站位水质有机氯农药 (HCHs和DDTs)超过国家一类水质的标准 .Organochlorine Pesticides at the water(surface water and porewater) in Jiulong River Estuary were determined. The range of organochlorine pesticides at surface water was 51.3～2479ng/L, and the concentration in porewater was 266～33355ng/L. The results showed that the organochlorine pesticides were removed in the estuary and the sediments were the reservior of the organochlorine pesticides. Compared with the results of other harbor and estuaries , it showed that the contamination for organic chlorine pollutants in Jiulong River Estuary was similar to those of others. At the same time,the risk of organochlorine pesticides in the estuary was evaluated.1998年教育部重点项目、基金委资助留学人员短期回国工作讲学专项基金!项目联合资助 (4 9910 76 0 74

Study on organochlorine pesticide and PCBs at surface water in Xiamen Harbour

利用GC -ECD对厦门西港 1998年 7月取得的 9个站位表层水体中的 18种有机氯农药 (HCHs ,DDTs等 )和 12种多氯联苯 (PCBs)进行分析。其中有机氯农药的浓度范围 6 .6 0～ 32 .6ng/L(其中HCHs:3.5 1～ 2 7.8ng/L ,均值 8.5 7ng/L ;DDTs:0 .95～ 2 .2 5ng/L ,均值 1.45ng/L) ,多氯联苯的浓度为 0 .0 8～ 1.6 9ng/L ,同国内外其他港口海区相比较 ,其污染程度相对较低。同时 ,对有机氯污染的分析表明 ,发现近年来仍有有机氯的污染输入 ,其农药的使用主要集中在六六六和滴滴涕上 ;多氯联苯和有机氯农药在厦门西港有着相似的分布及来源特征。organochlorine pesticides and 12 polychlorinated biphenyls(PCBs) at the sruface water in Xiamen Harbour were determined. The range of organochlorine pesticides was 6.60～32.60 ng/L, and the PCBs concentrations were 0.08～1.69 ng/L. Compared with the results of other harbor and estuaries, it showed that the contamination for organic chlorine pollutants was more slight than those of others. At the same time, it was found that organochlorine pesticides and PCBs have the similar geological destribution and resources.福建省自然科学基金!项目 (D9810 0 0 3

一种高载药量鬼臼纳米前药及其制备方法和应用

本发明公开了一种鬼臼毒素（POD）衍生物的药物前体，该药物前体是由药物分子与亲水性的短链聚乙二醇（PEG）通过酸敏感的亚胺键共价结合形成的，其中，所述的药物分子为鬼臼毒素的衍生物氨基鬼臼（NPOD）,其携药量可达35%以上，且该药物前体可以在水溶液中通过自组装的方式形成具有纳米结构的胶束。本发明还公开了该自组装药物前体胶束作为新的药物载体，用于负载如紫杉醇等一类疏水性药物的应用，实现了药物的协同治疗作用。本发明具有制备方法简单、环保、经济，在生物医药领域具备较大的应用价值

Study on PCBs in Water of Jiulong River Estuary

1999年 6月 ,对九龙江口 1 5个站位的表层水和 1 3个站位的间隙水中的 1 2种多氯联苯进行分析 ,表层水中的多氯联苯浓度为 0 36— 1 50ng/L ,间隙水中的多氯联苯浓度为 2 0 9-3869ng/L。对其中各组分的含量在各站位的分布特征进行了探讨 ,并对九龙江口的多氯联苯污染进行了初步的风险评价和来源分析。Through the analysis of 12 PCBs in surface water and pore water,its concentration in surface water is 0.36-1505mg/L while in pore water it is 209-3869mg/L.The distribution features are discussed and the primary risk assessment and source analysis of PCBs pollution in Jiulong River Estuary have been made

胡杨部分生态指标对塔里木河下游应急输水的响应

向塔里木河下游应急生态输水对于胡杨为主体的荒漠河岸植被的恢复和自然更新产生了积极的影响。本文根据近5年对塔里木河下游阿拉干地区的大量野外调查数据,分析了应急输水对该地区地下水位上升及胡杨各项生态指标的影响。结果显示:随着应急生态输水的继续和扩大,塔河下游典型监测断面——阿拉干的地下水位逐渐抬升,水质得到改善,河道附近的地下水埋深已经由输水前的10~12m抬升至5.5~6.2m。胡杨的部分生态指标对输水有不同程度的响应;具体表现在,在垂直河道方向上,离河道越近胡杨各项生态指标,即盖度、郁闭度、冠幅、萌生枝、树冠疏失度以及次生苗和实生苗出现的频率等对输水的响应越显著。总体来说,在河道200m范围之内,生态输水对胡杨恢复的影响程度是显著的;在200~800m之间,为中度影响;800m以上的距离几乎无影响

The Source and Distribution Characteristics of Polycyclic Aromatic Hydrocarbons in Surface Sediments of Xiamen Western Bay

利用ＧＣ－ＦＩＤ对厦门西港１９９８年７月采得８个站位表层沉积物中的１６种多环芳烃（ＰＡＨｓ）进行了分析。结果显示， １６种多环芳烃总量分布范围为 ２４７～ ４８０ｎｇ／ｇ，平均为 ３６７ｎｇ／ｇ。与１９９３年的厦门港的分析结果相比较，多环芳烃的污染程度降低；同世界其他港口相比较，其污染程度相对较低。同时，分析了厦门港ＰＡＨｓ污染的分布特征及其可能的污染来源，表明其主要是由于人类的油污染及燃料燃烧引起的．The paper reports 16 Polycyclic Aromatic Hydrocarbons (PAHs ) in the surface sediments in the Xiamen Buy. The range of Organochlorine Pesticides is 247-480 ng/g. Compared with the results of anlysis for the Xiamen Harbor in 1993 and other estuaries and harbors, the pollution level of PAHs in the Xiamen Harbor is lower, and the contamination is less serious than that in other harbors or estuaries in the world. At the same time, the paper also analyzes the PAHs contamination, which is found to have the similar geological distribution and sources, mainly anthropogenic sources

应用微波光子晶体的共面波导结构

本发明公开了一种应用微波光子晶体的共面波导结构，该结构包括:用于高频传输的一电介质层(3);用于限制电磁波的一光子晶体地平面(2)，该光子晶体地平面(2)由多个微波光子晶体单元结构(1)连接构成，位于该电介质层(3)之上，且与该电介质层(3)紧密结合;用于传播电磁波的一中心导体(4)，该中心导体(4)是一根L型50欧姆铜导线，在导线中间位置发生90度弯折，位于该电介质层(3)之上，且与该电介质层(3)紧密结合。本发明提供的这种应用微波光子晶体的共面波导结构，有效的减少了信号的泄漏，简化了制备工艺，使其更适合于单片微波集成，并能提高实共面波导的传输系数

哈密地区冰川变化趋势分析/Change Trend of Glaciers in the Hami Region[J]

雪冰融水是哈密地区地表径流的一种主要方式.受全球气候变暖的影响,哈密地区的冰川处于加速融化的阶段,水资源成为哈密地区发展的主要瓶颈.通过对哈密地区冰川物质平衡、面积、厚度、冰川区水文气象等参数的观测,预测冰川水文和水资源的变化,为更好地利用好哈密地区有限的水资源,为可持续发展,提出应对措施