The Chemistry of Water: Instructor's Manual

 

Contents

 

Introduction

Learning Goals for Students

Logistics

In What Courses Could the Module Be Used?

Suggested Schedule

Materials and Instrumentation

Chemical Concepts and Experimental Methods

 

Sampling

Reading in Laboratory Manual

Time Required

Preparation for the Field Trip

The Field Trip: Encouraging Student Participation

Flow of Lab

The Laboratory Notebook

A Note About Labeling Schemes

Safety Considerations

Stockroom Prep: Sampling

 

Coliform Bacteria Analyses

Reading in Laboratory Manual

Time Required

Pre-lab Discussion

Glassware

Sterilization

Nutrient broth

Filtration

Incubation

Counting Colonies

Reproducibility of the Test

Interpretation of the Results

Disposal of Used Petri Plates

Stockroom Prep: Coliform Test

 

pH and Alkalinity

pH Determination

Reading in Laboratory Manual

Time Required

Before Lab

Pre-lab Discussion

Alkalinity Determination

Reading in Laboratory Manual

Time Required

Before Lab

Pre-lab Discussion

Calculations for Buret Titration Method

Calculations for Hach Titrator Method

Answers to the Titration Curve Exercise

Field-Ready Alternatives to Burets

Stockroom Prep: pH and Alkalinity

 

Total Dissolved Solids

Reading in Laboratory Manual

Time Required

Before Lab

Pre-lab Discussion

Instructor's Notes on Salinity and Conductivity

Stockroom Prep: TDS Analysis

 

Dissolved Oxygen

Reading in Laboratory Manual

Time Required

Before Lab

Pre-lab Discussion

Calculations

Field-Ready Alternatives for the Winkler Method

Stockroom Prep: DO Analysis

 

Dilutions

Stockroom Prep: Dilutions

 

Chloride Determination

Reading in Laboratory Manual

Time Required

Before Lab

Pre-lab Discussion

Calculations for the Chloride Determination

Field-Ready Alternatives for Chloride Determination

Instructor's Notes on Chloride Determination

Stockroom Prep: Chloride Analysis

Fluoride Determination

Reading in Laboratory Manual

Time Required

Before Lab

Pre-lab Discussion

Field-Ready Alternatives for Fluoride Determination

Instructor's Notes on Fluoride Determination

Stockroom Prep: Fluoride Analysis

Nitrate Determination

Reading in Laboratory Manual

Time Required

Before Lab

Pre-lab Discussion

Calculations for Nitrate Determination

Field-Ready Alternatives for Nitrate Determination

Stockroom Prep: Nitrate Determination

 

Phosphate Determination

Reading in Laboratory Manual

Time Required

Before Lab

Pre-lab Discussion

Calculations for Phosphate Determination

Field-Ready Alternatives for Phosphate Determination

Stockroom Prep: Phosphate Analysis

 

Sulfate by a Turbidimetric Method

Reading in Laboratory Manual

Time Required

Before Lab

Pre-lab Discussion

Calculations for Sulfate Determination

Field-Ready Alternatives for Sulfate Determination

Stockroom Prep: Sulfate Determination

Anions by Ion Chromatography

Reading in Laboratory Manual

Time Required

Before Lab

Pre-lab Discussion

Instrument Prep: IC Anion Analysis

Instrument Parameters

Preparation of Standards

Preparation of Eluant Solution

 

Water Hardness by EDTA Titration

Reading in Laboratory Manual

Time Required

Before Lab

Pre-lab Discussion

Calculations for Hardness Determination

Field-Ready Alternatives for Water Hardness

Stockroom Prep: Water Hardness

 

Total Cation Content by Ion Exchange

Reading in Laboratory Manual

Time Required

Before Lab

Pre-lab Discussion

Calculations for Total Cation Determination

Stockroom Prep: Total Cation Content

 

Flame AA for Quantification of Cations

Reading in Laboratory Manual

Time Required

Before Lab

Pre-lab Discussion

Standardization

Flow of Lab for Rotation Through a Series of Experiments

Stockroom Prep: AAS Cation Analysis

Flame AA Instrument Setup

Preparation of Standards

Troubleshooting Common Instrument Problems

 

Data Analysis and Statistics

Reading in Laboratory Manual

Time Required

Before Lab

Pre-lab Discussion

The Data Analysis Worksheet

What to Expect in Your Data

A Sample Data Set

The Excel Worksheet

Plotting the Data

Other Interesting Things to Do With the Data

Answers to the Statistics Worksheet

The Report

Grading Keys

Sample Data from Strawberry Creek

The Anza.practice Data File

Sample Plots of Strawberry Creek Data

 

Appendix A: Suppliers for the Water Module

Appendix B: Data Collection Sheets

Appendix C: Transparency Masters


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