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双语推荐：铜离子

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以稻壳为吸附剂，研究了其对水体中铜离子的吸附去除。结果表明：铜离子在稻壳上的吸附平衡时间为2h；增加溶液pH值有利于稻壳对铜离子的吸附；离子强度对稻壳吸附铜离子基本没有影响，说明铜离子在稻壳上的吸附是非离子交换作用；稻壳对铜离子的饱和吸附量为416.7 mg/g；与Langmuir方程相比， Freundlich方程能更好的描述稻壳对铜离子的吸附，其相关系数达到0.9881。
Adsorption removal of copper ion by ricehull was studied. Results showed that adsorption of copper ion on ricehull reached the equilibrium within 2 h. Adsorption amount of copper ion on ricehull increased with the increase of pH. Ion strength had no effect on the adsorption of copper ion, which indicated that ion exchange did not occur during adsorption of copper ion. The saturated adsorption amount of copper ion reached to 416. 7 mg/g. Compared to Langmuir adsorption model, Freundlich adsorption model more suitably fitted the adsorption isotherm of copper ion with a correlation coefficient of 0. 9981.

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目的运用ICP法分析宫内节育器用铜原材料的体外铜离子释放特性，分析形状及纯度与铜释放量之间的关系。方法将铜原材料按100倍比例稀释浸泡于37.0±0.5℃模拟宫腔液中，定期换液并收集，ICP测定其铜离子浓度。结果单天铜离子的最大释放量均出现在7 d内，99.95%与99.99%的铜丝其铜离子释放量没有明显差异（P >0.05），早期铜丝的铜离子释放量远大于铜管（P<0.01)，第56 d时各组铜释放量趋于稳定。结论 ICP法能有效分析铜离子的释放特性，在相同面积下，铜丝的铜离子释放量比铜管更大。
Objective To study the Cupric ion release characteristics of dif erent copper raw materials in intrauterine device in vitro by ICP. Reveal the relationship between purity and shape of Cu-IUD copper and copper ion release. Methods According to a certain proportion, the copper raw materials were 100 times diluted into the simulated uterine solution at 37± 0.5 oC. Replaced medium at certain time points and col ected soaking liquid. Using ICP analyzed the concentration of copper ion released. Results The largest daily release of copper ions was in the first 7 days. There was no statistical y significant difference between the copper ion release amount of 99.99%and 99.95%purity copper wire ( P>0.05). The release of copper ion of the copper wire was far greater than that of the copper pipe in early stage (P<0.01).The release amount decreased and stabilized at 56 day. Conclusion Release characteristics of copper ion could effectively analysis by ICP. And in the same area, the relea

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通过Zeta电位分析、X射线光电子能谱分析、铜离子吸附试验、第一性原理计算及Hallimond浮选试验综合揭示了铜离子在黄铜矿表面同样存在着吸附行为，铜离子对黄铜矿同样具有活化作用，主要诱因是铜离子与表面活化位的硫作用，从而增加疏水性。这种吸附作用在一定条件下有利于黄铜矿自身的浮选。浮选矿浆中的铜离子主要来源于黄铜矿的表面氧化溶解和矿物内流体包裹体的释放，这些离子的存在及吸附使黄铜矿具有自活化特性。
The adsorption behaviors of copper ions on chalcopyrite surfaces were investigated based on zeta potential measurements, X-ray photoelectron spectroscopy, copper ion adsorption experiments, first-principles calculations, and Hallimond tube cell flotation experiments. The results show that copper ions activate the chalcopyrite as a result of the interactions between copper ions and sulfur on the chalcopyrite surface. This adsorption increases the flotation rate under certain conditions, and this is beneficial for the flotation of chalcopyrite. The copper ions in the flotation pulp are mainly derived from surface oxidation dissolution and the release of fluid inclusions, and these effects enable chalcopyrite to be activated.

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以铜离子为模板，以3-氨基丙基-三乙氧基硅烷为偶联剂，纳米 TiO2/SiO2为载体，利用表面离子印迹技术，在纳米TiO2/SiO2表面聚合形成了铜离子印迹聚合物．详细研究了铜离子印迹聚合物的吸附性能和选择性．实验结果表明，与非印迹聚合物相比较，铜离子印迹聚合物对铜离子具有较好的识别性和选择性．铜离子印迹聚合物与非印迹聚合物的吸附量分别是36.51mg g -1和11.79mg g -1．该法的检出限为0.17ng mL -1，相对标准偏差为1.97％．将该印迹聚合物用于自来水、青海湖水和扎陵湖水中的铜离子的分离富集和测定，分析结果令人满意．
A Cu (II) ion imprinted nanometer TiO 2 /SiO2 composite material was prepared by surface imprinting technique using Cu(II) ion as the template ,3 - Aminopropyltriethoxysilane as the crosslinking agent ,nanometer TiO2 /SiO2 composite material as the carrier. With the traditional solid sorbents and non-imprinted polymer particles ,the ion-imprinted polymers (IIPs) had higher adsorption capacity and selec-tivity for Cu(II). The maximum static adsorption capacity of the imprinted and non-imprinted sorbent for Cu(II) was 36.51mg g - 1 and 11.79mg g - 1 ,respectively. The detection limit of the method was 0.17ng mL - 1 and relative standard deviation of the eleven replicate determinations was 1.97 % . The method was applied in the determination of Cu(II) in Qinghaihu lake and zhalinghu lake water samples with satisfactory results.

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通过溶胶-凝胶法制备氨基修饰的磁性纳米粒子。以紫外分光光度法为检测手段，采用静态批次实验研究不同实验参数（吸附时间、溶液 pH 和溶液温度）对铜离子吸附的影响。对铜离子的动力吸附学过程符合准二级动力学模型。准一级动力学模型证明其对铜离子的吸附是一个基于内部粒子扩散的过程。吸附等温线数据既符合Langmuir吸附等温模型又符合Dubinin-Radushkevich吸附等温式。随着溶液pH的增加和温度的升高，水中铜离子的去除效率也增加。另外，铜离子在低 pH 时可以很容易地从吸附材料上面洗脱下来，并且在材料重复使用5次之后，铜离子的回收率仍然保持在90.0%以上。根据吸附活化能和热力学实验结果，可以推断铜离子在吸附剂上的吸附机制是离子交换-表面络合。
Amino-functionalized magnetic nanoparticle (NH2?MNP) were prepared by a sol?gel approach. The adsorption behavior of Cu(II) ions on NH2?MNP was discussed systematically by batch experiments. The effects of initial Cu(II) ions concentration, time, pH and temperature were investigated. In kinetic studies, the pseudo-second-order model was successfully employed, and the pseudo-first-order model substantiated that Cu(II) adsorption on NH2?MNP was a diffusion-based process. Langmuir model and Dubinin?Radushkevich model (R2>0.99) were more corresponded with the adsorption isotherm data of Cu(II) ions than Freundlich model. The adsorption capacity was increased with the increment of temperature and pH. NH2?MNP remains excellent Cu(II) recoveries after reusing five adsorption and desorption cycles, making NH2?MNP a promising candidate for repetitively removing heavy metal ions from environmental water samples. According to the results obtained from adsorption activation energy and thermodynami

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通过单因子静态急性毒性试验法和等毒性溶液法分别研究了重金属离子铜、锌对汤匙华哲水蚤的急性毒性和联合毒性效应.急性毒性试验结果表明:铜、锌离子对汤匙华哲水蚤24 h半致死浓度(LC50)分别为0.481、3.221 mg/L;48h LC50分别为0.383、1.573 mg/L;72h LC50分别为0.315、0.471 mg/L.铜、锌联合毒性致毒特征表明:高强度的锌离子对铜离子有拮抗作用,高强度的铜离子对锌离子有协同作用.
Acute toxicity and joint toxicity of copper , zinc on Sinocalanus dorrii are studied by single factor static acute toxicity test method and equal toxic solution method .Acute toxicity test results showed that the median lethal concentrations (LC50) of copper ions, zinc ions for 24 h to Sinocalanus dorrii were 0.481, 3.221 mg/L;LC50 for 48 h were 0.383, 1.573 mg/L;LC50 for 72h were 0.315, 0.471 mg/L.The joint toxicity presented characteristics shows that high-strength of copper ions performs synergistic effect and high-strength of zinc ions performs antagonistic effect to Sinocalanus dorrii.

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通过测定不同污染程度的土壤中的铜离子含量，以及香根草的叶和根中铜离子的含量，研究香根草对重金属铜的富集特性。结果表明，香根草对土壤中的铜离子有富集作用，能够减少土壤中重金属铜的含量，达到改良受铜重金属污染土壤的目的。
The determination of copper ion content of Vetiveria zizanioides different pollution degree of soil copper ion content and Qingyuan Shek Kok area in leaves and roots,through statistical analysis of experi-mental data,in-depth study of heavy metal copper enrichment characteristics of Vetiveria zizanioides. The results showed that the copper ion,vetiver plants has enrichment effect,can reduce the content of heavy metals in soil,improve the soil polluted by heavy metals of copper.

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将磁化技术引入活性炭对重金属离子的吸附中,考察了预磁和吸附过程中加磁对铁离子、镍离子和铜离子活性炭吸附容量的影响。实验表明,经过磁化处理的活性炭对铁离子和镍离子的吸附容量下降,对铜离子的吸附容量增加。预磁的效果比吸附过程中加磁的效果要强,且随着磁场强度的增加,活性炭对重金属离子的吸附容量变化越大。
The absorption of Fe3+, Ni2+ and Cu2+ on activated carbon in magnetic field was investigated. Effect of premagnetization and magnetizing in the absorption process on adsorption capacity of activated carbon for Fe3+, Ni2+and Cu2+ was analyzed. The results show that adsorption capacity of magnetized activated carbon for Fe3+ and Ni2+decrease, but its absorption capacity for Cu2+ increases; meanwhile, effect of the premagnetization is stronger than magnetizing in the absorption process. The stronger the magnetic field intensity, the greater the absorption capacity change of activated carbon.

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设计合成了一种基于新型香豆素水合肼希夫碱荧光探针,结构经1H NMR表征.利用荧光光谱研究了该探针分子对铜离子的识别作用.实验表明,该探针对铜离子具有较好的选择性识别能力,加入铜离子后,该探针的荧光发射强度显著减弱,并且荧光发射强度随着Cu2+浓度的增加而减弱.通过荧光离子滴定实验对其选择性和抗干扰能力进行了系统研究,发现加入其他常见金属离子(如Al3+、Ca2+、Co2+、Cr3+、Fe3+、K+、Mg2+、Na+、Ni2+、Zn2+等),荧光强度没有发生变化,并且上述各种离子分别与铜离子共存时,对其没有干扰.结果表明,香豆素水合肼希夫碱荧光探针对铜离子具有较高选择性识别.
A novel coumarin derivative was synthesized facilely by the condensation reaction of coumarin and hydrazine hydrate, and its structure was characterized by 1H NMR. The recognition properties of the target compound 3 with Cu2+ had been investigated by the fluorescence spectrophotometry. The results showed that the probe 3 exhibited the selective recognition of Cu2+. Upon addition of the concentration of Cu2+ to the solution of compound 3, decreasing fluorescence was observed. The selective and interference of compound 3 were discussed. The fluorescence intensity of compound 3 was no chang when the compound 3 was joined other metal ion (such as Al3+、Ca2+、Co2+、Cr3+、Fe3+、K+、Mg2+、Na+、Ni2+、Zn2+, etc.). The interference was found,when other metal and Cu2+coexist in solution of compound 3. Experiments showed that probe 3 was selective recognition of Cu2+.

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采用差分脉冲阳极伏安法实现生物冶金中铜（II）浓度的在线检测。结果表明，当体系中仅有铜（II）存在且其浓度范围为1μmol/L~1 mmol/L时，差分脉冲阳极伏安法所测阳极氧化峰电流与浓度间有很好的线性度。当此体系中含有0.2 mol/L KCl时，铜离子检测的线性范围从1 mmol/L （64 mg/L）扩展到100 mmol/L （6.4 g/L）。在此条件下，二价铜离子的还原分为两步连续的单电子转移过程，中间态为Cu＋的络合物CuCl-。此外，在铜的生物冶金体系中，经常会有铁离子存在，因此对铜离子检测的铁离子干扰也进行了研究，结果表明，当铁离子浓度低于100 mmol/L （5.6 g/L）时，其对铜离子检测的干扰可忽略。
On-line Cu (II) ion concentration detection in bioleaching system was achieved by anodic stripping differential pulse voltammetry (ASDPV). Good linearity between Cu (II) concentration and oxidation peak current was obtained when Cu (II) existed in 0K media in the concentration range of 1μmol/L (64μg/L) to 1 mmol/L (64 mg/L). Moreover, when 0.2 mol/L KCl was added into this media, the linear detection range could be extended from 1 mmol/L to 100 mmol/L (6.4 g/L). The reduction of Cu (II) to metallic copper was shown to proceed as two successive single-electron transfer reactions involving an intermediate chemical step where the cuprous ion (Cu+) was complexed by chloride to form the dichlorocuprous anion (CuCl-). In addition, interference effect was also investigated when Fe3+existed in the media, which was the common situation in the copper bioleaching system. The results showed no interference effect once the concentration of Fe3+was less than 100 mmol/L (5.6 g/L).

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