Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--
Use of a Modified Ultrasonic Nebulizer for the Analysis of Low Ionic-Strength Water
by Inductively Coupled Optical Emission Spectrometry

Open-File Report 97-382

LIST OF TABLES

Table -

1.Working ranges of constituents for inductively coupled plasma-
optical emission spectrometer
2.Single-element interference at 100 mg/L with background correction
3.Preparation of stock I calibration standard solutions
4.Preparation of stock II calibration standard solutions
5.Preparation of working calibration standard solutions
6.Preparation of Mixall calibration check standard solutions
7.Precision data
8.Method bias of ultrasonic nebulizer
9.Results of method detection limit calculations
10.Ultrasonic and cross-flow nebulizer detection limits
11.Results of spiked samples
12.Linearity of increasing concentrations of constituents for ultrasonic nebulizer
13.Results of paired sign test of cross-flow and ultrasonic nebulizers

For Inquiries Contact: Jon W. Raese (jwraese@usgs.gov)