取物

Based on the complexity of the sources for the sediments in the Okinawa Trough, the sequential extraction procedure was applied to the hydrothermal influenced sediments in the core H9 recovered from the middle Okinawa Trough. Five fractions, including exchangeable, bound to carbonates, bound to iron and manganese oxides, bound to organic matter, and residual were acquired. Based on detailed analysis for major, minor and rare earth element compositions, the distributions of the elements in various speciations of the sediments were determined and the controlling mechanism was discussed. The variations of hydrothermal signatures in the core, partitioned from the terrigenous, volcanic and biogenic materials, have been demonstrated and the accumulation rates of some elements were evaluated.

本文针对冲绳海槽多种物源沉积作用混杂的特征，采用顺序淋滤萃取方法对海槽中部受热液活动影响的H9岩芯沉积物进行了分离，将沉积物中分为可交换态、碳酸盐结合态、铁锰氧化物结合态、有机结合态和残渣态五个部分，并对各个结合态中常量、微量和稀土元素组成进行了分析，确定了不同元素在不同结合态中分配的比例，分析了控制不同元素进入沉积物的主要机制。

The conclusions were as follows: theνO-H andνC=O IR absorption maxima shifted towards higher wave numbers after imprinting 17β-estradiol on TFMAA-co-TRIM copolymer with the red shift of theνO-H groups being apparent after precipitation polymerization for 16h while that forνC=O groups being observed after polymerization for 24h. A strong interaction between TFMAA and 17β-estradiol was confirmed by the high selectivity for 17β-estradiol, as indicted by the values of the separation factor of isomers of 17β-estradiol/17α-estradiol (2.28) and the imprinted factor (3.01). Particle diameter of TFMAA-co-TRIM polymer was between 300 nm and 1.5μm, which suited well for solid phase sorbent throughout at low column pressure. The recognition of imprinting TFMAA-co-TRIM polymer for sterol molecules was driven by enthalpy eluted with acetronitile, and low temperature was in favor of the separation of sterol structure analogues on imprinting column. TFMAA-co-TRIM polymer possessed of determinate anti-heat stability, with melting point beginning at 255.84℃, Tp=257.40℃, control TFMAA-co-TRIM polymer and imprinting TFMAA-co-TRIM polymer were respectively decompounded at 267.79℃and 343.11℃, and solid micro-extraction noddle prepared by the special polymerization also showed definite recognition for 17β-estradiol by GC/MS detecting at 270℃. By selection of various washing and elution solvents, elution reagents of close polymerization system were of more advantage in template molecules retention and recognition on molecularly imprinted solid phase extraction column. At a certain extent, progesterone, 17α-estradiol, 17β-estradiol and 4-androstene-3, 17-dione could be intercepted on the MISPE column. Especially, MISPE had high selectivity for progesterone, and imprinting TFMAA-co-TRIM polymer could achieve adsorption balance within 50 min by absorption kinetics test for 17β-estradiol. However, MISPE column showed better selectivity and enrichment property for 17β-estradiol than C18 and CSPE columns according to the data from HPLC and GC/MS analyses. Recovery of 17β-estradiol on MISPE column was up to 85.5% while when prime extracting solution of milk powder was sampled, the recovery of CSPE and C18 columns were 43.7% and 30.7%, respectively.

通过研究阐明：紫外聚合产物TFMAA-co-TRIM中的νO-H振动吸收峰在聚合16h后红移，νC=O振动吸收峰在聚合24h后红移；TFMAA-co-TRIM对雌二醇异构体的印迹因子达到了3.01，α为2.28，优于其它功能单体参与得到的聚合物识别特性；TFMAA-co-TRIM聚合物粒径介于300 nm至1.5μm之间，作为色谱固定相具有良好的通量和低的柱压；在乙腈流动相中，TFMAA-co-TRIM分子印迹固定相的分离过程主要被焓驱动，低温有利于分子印迹固定相分离甾醇结构类似物；TFMAA-co-TRIM分子印迹聚合物在255.84℃时开始熔融，Tp=257.40℃，聚合物CP的降解温度在267.79℃，MIP降解温度在343.11℃，制备的固相微萃取头初步经GC/MS 270℃的耐热性测定；不同的洗提溶剂筛选证明了选择接近聚合溶剂的洗脱体系更有利于MISPE发挥识别效应；分子印迹固相萃取柱对孕酮、17α-雌二醇、17β-雌二醇和雄烯二酮都具有不同程度的保留特性，可作为此类化合物的吸附材料，特别对孕酮强保留的富集特性，可作为孕酮的选择性识别吸附剂，其分子印迹聚合物对17β-雌二醇的吸附动力学测定显示在50 min内基本达到吸附平衡，具有作为传感器核心敏感材料的潜力；对比萃取奶粉中17β-雌二醇性能，MISPE柱比非分子印迹固相萃取柱和C18柱具有更高的保留，回收率依次为85.5%，43.7%和30.7%。

A counter-current multistage leach ing process has been analyzed and used to leach potassium from roasts of potash feldspar, gypsum and calcium carbonate to increase the potassium recovery and the potassium sulfate concentration in the filtrate of the first stage.

采用多级逆流浸取操作方式以提高钾长石热分解烧成物浸取液中硫酸钾的浓度和浸出率，在对浸取过程进行分析和合理假设的基础上对过程进行了数学描述，建立了浸取过程相应参数的计算式。

In this paper,the mechanism,property and theoretically study of the solvent extraction of Pd and Pt with sulfoxide were introduced,and the research with the emphasis on the structure-extraction property relationship was reviewed.

本文回顾了国内外有关亚砜萃取钯和铂的3个主要研究领域：萃取性能与亚砜结构的关系、萃取机理及萃合物结构和亚砜萃取钯铂的理论研究。

The effects of the surfactants, trioctyl phosphine oxide, sodium dodecyl sulfonate and hexadecyl trimethyl ammonium bromide, on the extraction rate of Co^2^+ were investigated. The acceleration in the kinetics in contributed to the associated molecule~2 TOPO taking part in the extraction process directly. The decrement effects of SDS or CTMAB on the rate of extraction kinetics of Co^2^+ with HDEHP were also observed, which caused by the adsorption of molecules of SDS or CTMAB on the interface and decreased the interfacial adsorption amount of HDEHP. In addition, the extraction rate was reduced by a bigger margin in HDEHP-SDS system. This can be explained in terms of the formation of an electric field at the interface.

研究体系中加入不同表面活性剂所引起萃取速率的不同改变：三辛基氧化膦因与HDEHP形成可萃取的Co^2^+活性分子缔合物，降低了萃取过程活化能而使反应加速；十二烷基磺酸钠和十六烷基三甲基溴化铵因占据发生萃取反应的界面区，减小了HDEHP与Co^2^+反应的机会而使反应减速； SDS还因其在界面形成较强的负电场，造成Co^2^+的附加势能而使萃取速率有更大幅度的降低。

The nickel, lead, cadmium and mercury ions were pre-column derived by tera-(2-aminophenyl)-porphine (T2APP). These chelates were enriched by solid phase extraction with C18 cartridge and the enrichment factor of 50 was achieved.

中草药样品用微波消化，样品消化液中的镍、铅、镉、汞用四－－卟啉(T2APP)柱前衍生，然后用ZORBAX RP18固相萃取小柱萃取富集镍、铅、镉、汞的T2-APP络合物，富集倍数为50倍；经富集后的络合物用乙腈和0.05mol？

In some extraction system, it is proved that water may coordinate the extracted complex in equilibrated organic phase.

本文对萃取平衡数据的分析结果表明在一些萃取体系中存在水与萃合物的配位，并提出了萃合物配位水数的求算方法。

Methods Clinical examination was performed for all patients with vulvae itching and vaginal discharge diagnosed of vaginal candidiasis.

对以外阴瘙痒及白带增多为主诉，拟下生殖道假丝酵母菌感染的女性患者进行临床检查，先取阴道分泌物进行假丝酵母菌检查，同时取宫颈管分泌物采用荧光定量PCR测定UU、CT。

The results show that BODMAC has good ability to extract gold from chloride, the composition of extraction species is BODMA·AuCl〓 The influence of NaCl concentration on distribution coefficient of gold is different from that of uranium .

结果发现，BODMAC从氯化物中萃取金的能力很强，通过紫外光谱和红外光谱确定了其萃合物的组成为BODMA·AuCl〓的离子缔合物，计算了其萃取反应的平衡常数为10〓。

After peltate yam is water washed, crushed, fermented and acid hydrolyxed, the solid matter and acid water solution are separated via centrifugation, the solid matter is extracted with organic solvent to make saponin extracted into organic phase, the organic phase is back extracted to eliminate other components, the organic solvent is distillation recovered for reuse and precipitation separated saponin is stoved to obtain product.

黄姜经水洗净、粉碎、发酵和加酸水解后，离心分离固体物和酸性水溶液，用一种有机溶剂萃取固体物，皂素被萃入有机相中，经返萃取去除其它成分后，将有机溶剂蒸馏回收，重用，沉淀析出的即为皂素，经烘干即得产品。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。