Comparison of two assays for arsenate.

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Description

Arsenate(V) ion in natural river waters, as determined by two assay methods.

Usage

1

Format

A data frame with 30 observations on the following 4 variables.

aas

micrograms/liter, by continuous selective reduction and atomic absorbtion spectectromitry

se.aas

estimated standard error of the result

aes

micrograms/liter, by non-selective reduction, cold trapping, and atomic emission spectroscopy

se.aes

estimated standard error of the result

Source

The data is found in BD Ripley and M Thompson, Regression techniques for the detection of analytical bias, Analyst 112:377-383, 1987.