東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Electrical conductivity: Theory and ...

McCleskey, Richard Blaine.

Linked to FindBook

Google Book

Amazon

博客來

Electrical conductivity: Theory and applications for natural waters.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Electrical conductivity: Theory and applications for natural waters./
Author:	McCleskey, Richard Blaine.
Description:	258 p.
Notes:	Source: Dissertation Abstracts International, Volume: 71-06, Section: B, page: 3870.
Contained By:	Dissertation Abstracts International71-06B.
Subject:	Engineering, Environmental. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3403949
ISBN:	9781109780253

Electrical conductivity: Theory and applications for natural waters.
McCleskey, Richard Blaine.

Electrical conductivity: Theory and applications for natural waters. - 258 p.

Source: Dissertation Abstracts International, Volume: 71-06, Section: B, page: 3870.

Thesis (Ph.D.)--University of Colorado at Boulder, 2010.

A new method has been developed for calculating the specific conductance of a wide range of natural waters including acid mine waters, geothermal waters, seawater, dilute mountain waters, and river water impacted by municipal waste water. The method presented in this study has significant advantages over existing specific conductance methods by improving the calculations of ionic molal conductivities, accurately accounting for ion pairs, and including more species relevant to natural waters. High-quality electrical conductivity data for numerous electrolytes exist in the scientific literature, but the data do not span the concentration or temperature ranges of many electrolytes in natural waters. To provide a better basis for calculating the molal conductivity for the ions important to natural waters, the electrical conductivities of 34 environmentally relevant electrolyte solutions ranging from 10-4 to 1 m in concentration and from 5 to 90°C in temperature have been determined. In addition, the concentrations of ion pairs and complexes were determined using geochemical speciation models. By using the speciated ion concentrations, the method can be used to reliably calculate the specific conductances of natural water samples having a large range of ionic strength (0.0004--0.7 m), temperature (0--96°C), pH (1.1--9.80), and specific conductance (33--70,000 muS cm-1). For 1,553 natural water samples, the mean difference between the calculated and measured specific conductances was -0.7% +/- 5%. For the wide range of natural waters tested in this study, transport numbers were calculated and the ions that contribute significantly to the specific conductance were identified as H+, Na+, Ca2+, Mg2+ , NH4+, K+, Cl-, SO42-, HCO3-, CO 32-, F-, Al3+, Fe 2+, NO3-, and HSO4-. Transport numbers can also be used to better predict the concentrations of ions in natural waters. This method can be used to check the accuracy of water analyses by coupling charge imbalance and specific conductance imbalance. Considering the importance of reliable water-quality analyses and the time and expense of analyzing samples, the ability to identify inaccurate determinations is important. As a test, the major cation or anion was artificially adjusted for 50 different water samples and the constituent in error was easily identified.

ISBN: 9781109780253Subjects--Topical Terms:

783782
Engineering, Environmental.

Electrical conductivity: Theory and applications for natural waters.
LDR:03495nam 2200337 4500 001 1403279
005 20111115085153.5
008 130515s2010 ||||||||||||||||| ||eng d
020 $a 9781109780253
035 $a (UMI)AAI3403949
035 $a AAI3403949
040 $a UMI $c UMI
100 1 $a McCleskey, Richard Blaine. $3 1682537
245 1 0 $a Electrical conductivity: Theory and applications for natural waters.
300 $a 258 p.
500 $a Source: Dissertation Abstracts International, Volume: 71-06, Section: B, page: 3870.
500 $a Adviser: Joseph N. Ryan.
502 $a Thesis (Ph.D.)--University of Colorado at Boulder, 2010.
520 $a A new method has been developed for calculating the specific conductance of a wide range of natural waters including acid mine waters, geothermal waters, seawater, dilute mountain waters, and river water impacted by municipal waste water. The method presented in this study has significant advantages over existing specific conductance methods by improving the calculations of ionic molal conductivities, accurately accounting for ion pairs, and including more species relevant to natural waters. High-quality electrical conductivity data for numerous electrolytes exist in the scientific literature, but the data do not span the concentration or temperature ranges of many electrolytes in natural waters. To provide a better basis for calculating the molal conductivity for the ions important to natural waters, the electrical conductivities of 34 environmentally relevant electrolyte solutions ranging from 10-4 to 1 m in concentration and from 5 to 90°C in temperature have been determined. In addition, the concentrations of ion pairs and complexes were determined using geochemical speciation models. By using the speciated ion concentrations, the method can be used to reliably calculate the specific conductances of natural water samples having a large range of ionic strength (0.0004--0.7 m), temperature (0--96°C), pH (1.1--9.80), and specific conductance (33--70,000 muS cm-1). For 1,553 natural water samples, the mean difference between the calculated and measured specific conductances was -0.7% +/- 5%. For the wide range of natural waters tested in this study, transport numbers were calculated and the ions that contribute significantly to the specific conductance were identified as H+, Na+, Ca2+, Mg2+ , NH4+, K+, Cl-, SO42-, HCO3-, CO 32-, F-, Al3+, Fe 2+, NO3-, and HSO4-. Transport numbers can also be used to better predict the concentrations of ions in natural waters. This method can be used to check the accuracy of water analyses by coupling charge imbalance and specific conductance imbalance. Considering the importance of reliable water-quality analyses and the time and expense of analyzing samples, the ability to identify inaccurate determinations is important. As a test, the major cation or anion was artificially adjusted for 50 different water samples and the constituent in error was easily identified.
590 $a School code: 0051.
650 4 $a Engineering, Environmental. $3 783782
650 4 $a Geochemistry. $3 539092
690 $a 0775
690 $a 0996
710 2 $a University of Colorado at Boulder. $b Civil Engineering. $3 1021890
773 0 $t Dissertation Abstracts International $g 71-06B.
790 1 0 $a Ryan, Joseph N., $e advisor
790 1 0 $a Ryan, Joseph N. $e committee member
790 1 0 $a Nordstrom, Kirk $e committee member
790 1 0 $a Ball, James W. $e committee member
790 1 0 $a McKnight, Diane M. $e committee member
790 1 0 $a Bielefeldt, Angela R. $e committee member
790 $a 0051
791 $a Ph.D.
792 $a 2010
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3403949