以溴代十六烷基吡啶改性沸石为吸附分离材料,研究了其对水中Cr(Ⅵ)去除率的影响和吸附等温线以及吸附机理.结果表明,在改性沸石粒度为0.25~0.38mm、用量30g·L-1、溶液pH=6、25℃的条件下振荡吸附30min,水中Cr(Ⅵ)的去除率达到93%以上.改性沸石对水中Cr(VI)的吸附符合Langmuir等温吸附线,对Cr(Ⅵ)的饱和吸附量每100g改性沸石达到36.78mg.X射线衍射分析表明,改性沸石结构中吸附了溴代十六烷基吡啶分子基团C21H38NBr,红外光谱分析证明正是这一基团造成了改性沸石对水中Cr(Ⅵ)的吸附去除

8.10 Signal transduction and two-component regulatory system VI. Differences between prokaryotes and eukaryotes in gene expression V. RNA-Based Regulation 8.11 RNA Regulation and Antisense RNA 8.12 Riboswitches 8.13 Attenuation 弱化作用

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对外经济贸易大学：《公司理财 CORPORATE FINANCIAL CORPORATE FINANCIAL》课程教学资源（作业）PART VI

Abschnitt 1 Die neue Rückbesinnung auf die Antike Abschnitt 2 Johann Wolfgang Goethe Abschnitt 3 Friedrich Schiller Abschnitt 4 Entstehung der musikalischen Klassik

I. Ointments II. Compendial requirements for ointments III. Creams IV. Gels V. Miscellaneous semisolid preparations: pastes and plasters VI. Features and use of dermatologic preparations VII. Features and use of ophthalmic ointments and gels VIII. Features and use of nasal ointments and gels IX. Features and use of rectal preparations X. Features and use of vaginal preparations

• I. Introduction • II. The SUSY EW Fine-Tuning Problem • III. The MSSM with the Heavy LSP • IV. No-Scale F-SU(5) • V. General Natural Solution • VI. Summary

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I. Introduction; II. Objectives; III. Data for Ratemaking; IV. Premium Data; V. Exposure Units; VI. The Expected Effective Period; VII. Ingredients; VIII. Rate Changes

第一节 标志的概念 第二节 标志的分类