pb2

Pb2 + and DNA could produce conclusion effect , changing the structure of DNA .

Pb2+能与DNA发生缔合作用，使DNA的结构发生改变。

The results showed that Pb2 + is accumulated mainly in roots .

发现从根部进入植物体内的铅主要累积在根部。

Complex organic materials are unfavorable to the adsorption of Pb2 + .

与蒙脱石形成复合体形式的有机化合物的存在不利于蒙脱石对Pb2+的吸附。

The method was applied successfully to the determination of Pb2 + in water samples with satisfactory results .

RRS法被成功应用于测定水样中的铅离子并获得了非常满意的结果。

Manufacture of porous High Strength Granulated Zeolite and the Properties of Pb2 + Exchanged

多孔高强度沸石颗粒的制取及对铅离子的交换性能

Lead ( Pb2 + ) is one of the most important neurotoxic metals in the environment .

铅是最重要的环境神经毒物之一。

The content of Pb2 + was determined by atomic absorption spectrometry ( AAS ) analysis .

利用原子吸收光谱法测定Pb2+含量。

The initial adsorption rate of Cd2 + decreased while the initial concentration of Pb2 + increased .

Cd2+，的吸附初速率随着Pb2+，初始浓度增大而减小；

So Pb2 + ? Zn2 + had no secondary pollution to the environment .

测试结果表明，Pb2+、Zn2+可以很好地固化在混凝土中，不会对环境造成二次污染。

With the augmentation in the concentration of Pb2 + , the permeability of cell membrane increased .

随着外界处理浓度的增加，膜的透性加大。

The initial adsorption rate of Cd2 + and Pb2 + increased while their respective initial concentration increased .

Pb2+，和Cd2+，的吸附初速率都随自身初始浓度的增加而增大。

After being treated with Pb2 + , the germination percentage of the two mosses decreased .

经Pb~（2+）处理后，两种藓类植物孢子萌发率降低；原丝体生长缓慢；

The result showed that tea polyphenols can react with Pb2 + and lead to precipitate .

研究发现：茶多酚与Pb~（2+）发生络合反应形成沉淀。

Furthermore , the effects of temperature on the Pb2 + , Ag + adsorption on vermiculite were studied .

考察了温度对蛭石吸附单一离子Pb2+、Ag+的影响。

The effect of Cd2 + was lower than that of Pb2 + on the activity of the enzyme .

Cd~（2+）比Pb~（2+）对该酶活性影响更小。

These results suggest that Pb2 + decrease the membranes fluidity and surface negative charge density of rat renal microsome .

提示，Pb~（2+）能降低离体大鼠肾微粒体膜流动性和膜表面负电荷密度。

In this paper , active clay was applied to adsorb Pb2 + and Cr ( VI ) in solution .

本文用膨润土经改性制得活性白土，并用活性白土吸附水溶液中的Pb2+和Cr（VI）。

The adsorption to Cu2 + and Pb2 + are chemical processes , and they are entropy driven .

该树脂对Cu2+和Pb2+的吸附属于化学吸附，是一个熵驱动的过程。

Adsorptive capacity and dynamics characteristics of humic acid on Pb2 + in soil are studied by using a lead ion selective electrode .

采用Pb离子选择电极研究了Pb离子在胡敏酸上的吸附量和动力学特性，以及溶液pH、温度、离子强度对吸附的影响。

The results showed that the polymers have good adsorption properties for Ag + , Pb2 + , and Hg2 + .

结果表明，聚合物对Ag+，Pb2+，Hg2+表现出良好的吸附特性，且聚合物B的吸附能力优于聚合物A。

Added Ca2 + decreased assimilated substance derived from trypsin and pepsin combining with Pb2 + .

Ca2+的加入降低模拟胃液和胰液消化物与Pb2+的结合量。

The rate of traffic flow is the main reason that Pb2 + in the total suspended particulate substance of atmosphere is accumulated ;

车流量是造成大气总悬浮颗粒物中Pb2+累积的主要原因；

Study on Synthesis and Extraction of Ag + 、 Pb2 + by Calix [ 4 ] Arene Derivatives

杯[4]芳烃衍生物的合成及其萃取银、铅金属离子的性能研究

The concomitant Cd2 + reduced the adsorptive capacity of the immobilized bacteria for Pb2 + .

共存离子Cd2+降低了固定化细菌对Pb2+的吸附量。

The acute toxicity and joint toxicity test of Pb2 + , Cd2 + to Eriocheir sinensis was determined .

探讨了Pb2+，Cd2+两种重金属离子对中华绒螯蟹的急性毒性及联合毒性作用。

Verified by fluorescence measurements , the fluorescent probes can selectively identify Ni2 + and Pb2 + .

经荧光测试发现，合成的荧光分子探针能够选择性的识别Ni2+和Pb2+。

Effects of Hg2 + and Pb2 + on the SOD activity were increased first and then decreased during prolonging the exposure time .

Hg2+和pb2+对中华哲水蚤T-SOD活性的影响均表现为随暴露时间延长，呈先上升后下降的趋势。

In contrast , humic acid increased the toxicity of Pb2 + and decreased the bioavailability of Pb2 + .

pH>5时，则降低了Pb2+的毒性和生物可利用性。

However , the inhibition of Pb2 + or Al3 + would be released by the addition of Mg2 + .

Mg2＋可以解除Pb2＋和Al3＋对产酸的抑制作用。

The results demonstrated : Pb2 + suppressed the expression of H-current , decreased the voltage sensitivity and increased the activation voltage .

结果表明：铅抑制了H-电流表达；降低了H-通道电压敏感性和升高了H-通道的激活电压。