稀土硝酸盐冠醚络合物(ⅩⅥ)——冠醚B12C4与稀土硝酸盐络合物的合成与性质

在乙晴和丙酮中合成了冠醚B12C4与稀土硝酸盐的络合物RE(NO_3)_3·B12C4·XH_2O(RE=Y和Pr时,X=2;RE=Nd时,X=0;RE=Tm、Yb和Lu时,X=3),通过金属的络合滴定,冠醚B12C4的分光光度测定,溶剂的气相色谱分析以及红外光谱,差热(DSC)与热重分析和X射线衍射分析等研究了络合物的组成和性质。还在15±0.1℃测定了各络合物在乙晴中的溶解度。对重稀土(Tm、Yb和Lu)络合物在一定温度由1:1型向2:1型的转变进行了化学分析、紫外光谱和红外光谱的研究。

Application of Sodium Ion Sensor Based on the SnO_2/ITO Glass in the Detection of Rinsing Solution for Contact Lenses

This paper presents the studying results of the sodium ion sensor device based on the SnO_2/ITO glass structure in the detection of rinsing solution for contact lenses.The selective membrane contains poly (vinyl chloride) (PVC),bis (2-ethylhexyl) sebacate (DOS),(12-crown-4) methylmalonate (B12C4),and sodium tetrakis (4-fluoropbenyl) borate dehydrate (NaTFBD). The final weight ratios are PVC:DOS:B12C4:NaTFBD=33:66:2:2.In this condition,the sensor has performances with linear sensitivity,short response time,good repeatability and selectivity.The sensor was used to measure the rinsing solution for the contact lenses.Because the experimental results show close to the accurate value for four commercial products,this sensor can preliminary be used in detecting the rinsing solution for the contact lenses.Using this structure and sodium-sensing membrane to construct the sodium sensor is proven successfully in this application.