笼形聚偕胺肟树脂的研究贵金属在RCO2H／ACAO树脂上的交换吸附

用羧酸处理的笼形聚偕胺肟树脂（ＲＣＯ２Ｈ／ＡＣＡＯ）吸附Ｐｄ（Ⅱ）、Ｉｒ（Ⅳ）、Ｐｔ（Ⅳ）、Ａｇ（Ⅰ）、Ａｕ（Ⅲ）离子的能力与羧酸性质有关，巯其乙酸／ＡＣＡＯ树脂对Ｐｄ（Ⅱ）、Ｉｒ（Ⅳ）和Ａｕ（Ⅲ）吸附容量较高，乙二酸／ＡＣＡＯ树脂则对Ａｇ（Ⅰ）和Ｐｔ（Ⅳ）离子有稍强的吸附能力。除Ｐｄ（Ⅱ）外，ＲＣＯ２Ｈ／ＡＣＡＯ树脂吸附贵金属离子的能力低于笼形聚偕胺肟树脂（ＣＡＯ）和碱处理笼形聚偕胺肟树脂（ＢＣ     

巯基化合物在分析中的应用

本文评述了巯基化合物在分析中的应用。叙述了其在一般的元素分析以及接着在各种吸附剂或电极的表面制得巯基吸附剂或巯基修饰电极从而用来富集测定微量元素的进展情况，引用文献达２２０篇。     

Polysaccharide-modified iron oxide nanoparticles as an effective magnetic affinity adsorbent for bovine serum albumin

The magnetic separation technique based on magnetic iron oxide nanoparticles (MNPs) has potential applications in protein adsorption and purification, enzyme immobilization, cell sorting, nucleic acid detachment, and drug release. However, the naked MNPs are often insufficient for their hydrophilicity, colloidal stability, and further functionalization. To overcome these limitations, chitosan was firstly carboxymethylated and then covalently conjugated on the surface of the MNPs ranging in size from about 5 to 15 nm, which were prepared by co-precipitating iron (II) and iron (III) in alkaline solution and then treating under hydrothermal conditions. It was found that such modification did not result in the phase change of the MNPs, and the resultant modified nanoparticles were still superparamagnetic. In particular, the colloidal stability of MNPs in aqueous suspension was improved after the surface modification. By investigating the adsorption of bovine serum albumin (BSA) on the modified MNPs, it was observed that the adsorption capacity of the BSA on the modified MNPs increased rapidly within several minutes and then reached the maximum value at about 10 min. The adsorption equilibrium isotherm could be fitted well by the Langmuir model. The medium pH affected greatly the adsorption of the BSA. The maximum adsorption of the BSA occurred at the pH value close to the isoelectric point of the BSA, with a saturation adsorption amount of 94.45 mg/g (25 °C). For the BSA feed concentration of 1.017 mg/ml, a high desorption percentage of 91.5% could be achieved under an alkaline condition (pH 9.4).     

Preparation and adsorption mechanism of rare earth-doped adsorbent for arsenic(V) removal from groundwater

Human poisoning and death from arsenic(As) have occurred as a result of drinking water contaminated with As in some regions and countries, such as Taiwan, Chile, Bangladesh, and In-dia[1]. Chronic arsenism poses a serious health problem in China also[2]. If China lowers its current drinking water standard of As from 0.05 to 0.01 mg/L[3], a level adopted by WHO[4] and some industrialized countries[5], the population affected will increase significantly. It is of great impor-tance to develo…     

Analysis of adsorption isosteres of gas and vapor on microporous adsorbents

The adsorption isosteres and isotherms of methane on the microporous carbon adsorbent PAU-10 were calculated using the Dubinin—Radushkevich equation taking into account nonideality of the gas phase. The conditions under which the adsorption isosteres are linear were outlined. The calculated and experimentally found adsorption isosteres were compared for the methane—PAU-10 system. The slope of the isosteres remains unchanged on going to the region of strong nonideality of the gas phase. Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 3, pp. 382–385, March, 2007.     

吸附/热脱附气相色谱分析痕量C1～C5烃

本文以活性炭、TDX-01、Tenax GC、Porapak Q和GDX-104为吸附剂，不经冷凝，在常温下吸附富集痕量C1～C5烃并直接引入毛细管柱。同时探讨了吸附剂的最佳热脱附温度、饱和吸附量、吸附富集回收率、热脱附直接进样的线性规律及方法的相对偏差．     

粉煤灰基质多孔吸附材料显微结构及性能研究

本文研究了加入粘结剂制成折粉煤灰基质多孔吸附材料的显微结构，将它与原灰结构作比较，并进一步研究了加入粘结剂再加入外掺剂材料的显微结构。从理论上阐述了提高粉煤灰基质多孔吸附材料吸附、脱色性能的机理。     

笼形聚偕氨肟树脂的研究──HA/ACAO对金属络阴离子的交换吸附

研究了Ce（Ⅳ）、Ⅴ（Ⅴ）、Cr（Ⅵ）、Mo（Ⅵ）、W（Ⅵ）、Mn（Ⅶ）、Fe（Ⅱ）、Fe（Ⅲ）、Pd（Ⅲ）、Pt（Ⅳ）、Ir（Ⅳ）和An（Ⅲ）等络阴离子在酸处理笼形聚偕氨后树脂（HA／ACAO）上的交换吸附行为。在酸性溶液中，Ce（Ⅳ）与HA／ACAO上的偕氨厉基及可能存在的羟肪酸基进行氧化还原反应。HA／ACAO对上述络阴离子除进行交换吸附外，也发生物理吸附。     

具有精细结构的吸附与离子交换树脂

本文论述了某些具有精细化学，物理结构的离子交换树脂和吸附树脂的特性与应用。     

Potential of metal–fullerene hybrids as strong nanocarriers for cytosine and guanine nucleobases: A detailed DFT study

In this article, the adsorption of cytosine and guanine molecules on the surface of Cr-doped C20 fullerene (C19Cr) and Ni-doped C20 fullerene (C19Ni) are studied using first-principles density functional theory (DFT) calculations. In order to thoroughly comprehend the influences of the molecules on the metal-fullerene complexes, the geometric parameters, the binding energies, transferred charges, the magnitude of dipole moments, thermochemical parameters, frontier molecular orbitals, and the global indices of activities are calculated. The results highlighted that the interactions of both cytosine and guanine molecules with metal-fullerene complexes are highly exothermic, suggesting that these molecules might be chemisorbed on their adsorbents. The C19Cr exhibits a better adsorption behavior toward the molecules compared to C19Ni, and cytosine has the higher binding energies with metal-fullerene complexes in comparison with guanine. Further analyses showed that the C19Cr experiences significant changes in its electronic properties upon adsorption of the cytosine molecule. However, the small variations in the electronic properties of C19Ni after complexation with guanine indicate that this complex is not sensitive to the guanine. Furthermore, the results of frontier molecular orbital reveal the strong (moderate) interactions between the C19Cr with the cytosine (guanine) molecule and moderate (weak) interactions between the C19Ni with the cytosine (guanine) molecule. Therefore, the C19Cr and C19Ni have moderate sensitivities to cytosine and guanine molecules. More excitingly, our findings divulge promising potential of the Cr-fullerene complex as a biochemical adsorbent for cytosine.