铬黑T胶束增溶光度法测定痕量镉——十二烷基苯磺酸钠作增敏剂,三乙醇胺作增稳剂

PH=9.20的Na2B4O7-NAOH缓冲溶液中，十二烷基苯磺酸钠和三乙醉胺存在下，Cd(Ⅱ)和铬黑T瓜形成配位比为1:1的紫红色配合物，基于该显色瓜的最适条件测定镉的胶束增溶分光兴度法，在最大波长560mm处表观摩乐尔系数，e=6.68*106L.cm.cn-1,镉浓度在0～8.0pg/ml范围内服从比耳定律，回归方程A=0.169+5.0*10-3Ccd(pg/ml),r=0.9996,检出限为1.0*10-12g/ml。本法用于小样中镉的测定，结果满意。

聚合物驱采油污水增黏稳黏剂SC的研制

针对影响污水聚合物溶液初始黏度和稳定性的主要因素,从消除或降低其对聚合物溶液影响的角度,研制开发出了既能较大幅度提高聚合物溶液初始黏度又能使黏度保持相对稳定的采油污水增黏稳黏剂SC.孤东油田采油污水经SC处理后配成1500mg/L聚合物溶液,初始黏度提高38%以上,略高于清水配母液污水稀释聚合物溶液,40d后的黏度比污水、清水聚合物溶液分别高出85.9%和61.2%.SC处理采油污水后可以代替清水配制聚合物溶液.

Existing Contradictions and Recommendations to China＇s Insurance Industry Characterized by Low-growth and Low-interest

This article seeks to analyze the contradictions and recommendations to China＇s insurance industry in the context of low-growth and low interest market. Under the pressure caused by the contradictions between the sustainable growth in the insurance premium income and the low ROI, it is very important to solve these contradictions for maintaining a sustainable and steady growth in insurance industry, at the same time, it is also favorable to play a role as a social stabilizer as well as an economic booster for insurance industry. This paper can be divided into four parts： Part I analyzes the five basic characteristics of Chinese low-growth and low-interest insurance industry; part II elaborates the principal contradictions faced by Chinese low-growth and low-interest insurance industry; part III analyzes the development environment of Chinese insurance industry; part IV proposes the recommendations to solve these contradictions.