{"id":4419,"date":"2025-07-31T07:53:24","date_gmt":"2025-07-31T07:53:24","guid":{"rendered":"https:\/\/journal.ziu-university.net\/?p=4419"},"modified":"2025-08-05T08:23:00","modified_gmt":"2025-08-05T08:23:00","slug":"the-relationship-between-electrical-conductivity-and-total-dissolved-salts-estimated-by-the-gravimetric-method-and-the-effect-of-dilution-of-some-groundwater-samples-on-electrical-conductivity","status":"publish","type":"post","link":"https:\/\/journal.ziu.edu.sy\/?p=4419","title":{"rendered":"The Relationship between Electrical Conductivity and Total Dissolved Salts Estimated by the Gravimetric Method and the Effect of Dilution of Some Groundwater Samples on Electrical Conductivity"},"content":{"rendered":"\n

Abstract<\/strong><\/p>\n\n\n\n

A laboratory experiment was conducted in the Soil Chemistry and Fertility Laboratory at the Faculty of Agriculture – Sebha University, Libya to study the effect of the relationship between electrical conductivity and total dissolved salts estimated by the gravimetric method and the effect of dilution of some groundwater samples on the electrical conductivity<\/strong>. To study this relationship, 63 water samples were collected from different groundwater wells from different areas of the Fezzan region, Libya. The electrical conductivity (EC25<\/sub>) of each sample was estimated, and the amount of salts was estimated by the gravimetric method. The amount of salts was calculated with the information about the electrical conductivity by the currently used method using the equation: mg\/l = EC25<\/sub> * 640 when EC25<\/sub> is less than 5 dSm-1<\/sup>. If EC25<\/sub> is greater than 5 dSm-1<\/sup>, to find the amount of total dissolved salts (TDS), we substituted in the following equation: mg\/l = EC25<\/sub> * 800. When applying these equations, we did not obtain correct results for the amount of total salts, but rather obtained results far from the reality obtained by the gravimetric method. However, when applying the equations that we obtained as a result of this research, which are as follows:<\/p>\n\n\n\n

First,<\/strong> when EC25<\/sub> is less than 5 dSm-1<\/sup>, we arrived at the following equation: <\/p>\n\n\n\n

mg\/l = 705.649EC25<\/sub> dSm-1<\/sup>-372.282.<\/p>\n\n\n\n

When substituting in this equation, we obtained results very close to the amount of salts obtained by the gravimetric method.<\/p>\n\n\n\n

 Secondly<\/strong>, when EC25<\/sub> is greater than 5 dSm-1<\/sup>, we arrive at the following equation:<\/p>\n\n\n\n

mg\/l = 761.00 EC25<\/sub> dSm-1<\/sup> \u2013 180.316.<\/p>\n\n\n\n

 Also, when we substituting in this equation, we get results very close to the amount of salts obtained by the gravimetric method.<\/p>\n\n\n\n

Thirdly<\/strong>, we may sometimes look at the dilution process (two, three or four times), then we estimate the conductivity by multiplying the conductivity by the reciprocal of the dilution to get the original conductivity, but when we apply that, we get a value that was not the same as the value before the dilution. To avoid making mistakes when doing the dilution process and to get a value (EC) closer to the original conductivity, <\/strong>this is done by multiplying the electrical conductivity measured at any dilution * the correction factor calculated at this dilution.<\/p>\n\n\n\n

The correction factor obtained for dilutions two, three, four, five, and six times is 0.83, 0.78, 0.69, 0.66, 0.65 respectively.<\/p>\n\n\n\n

Keywords: –  Electrical Conductivity, Total dissolved solids, Dilution, water quality. Wells water.<\/strong><\/p>\n\n\n\n

\u0627\u0644\u0645\u0644\u062e\u0635<\/strong><\/p>\n\n\n\n

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\u0623\u0648\u0644\u0627\u064b\u060c \u0639\u0646\u062f\u0645\u0627 \u062a\u0643\u0648\u0646 \u0642\u064a\u0645\u0629 EC25 \u0623\u0642\u0644 \u0645\u0646 5 \u062f\u064a\u0633\u064a \u0633\u0645-1\u060c \u062a\u0648\u0635\u0644\u0646\u0627 \u0625\u0644\u0649 \u0627\u0644\u0645\u0639\u0627\u062f\u0644\u0629 \u0627\u0644\u062a\u0627\u0644\u064a\u0629:<\/p>\n\n\n\n

mg\/l = 705.649EC25<\/sub> dSm-1<\/sup>-372.282..<\/p>\n\n\n\n

\u0639\u0646\u062f \u0627\u0644\u062a\u0639\u0648\u064a\u0636 \u0641\u064a \u0647\u0630\u0647 \u0627\u0644\u0645\u0639\u0627\u062f\u0644\u0629\u060c \u062d\u0635\u0644\u0646\u0627 \u0639\u0644\u0649 \u0646\u062a\u0627\u0626\u062c \u0642\u0631\u064a\u0628\u0629 \u062c\u062f\u064b\u0627 \u0645\u0646 \u0643\u0645\u064a\u0629 \u0627\u0644\u0623\u0645\u0644\u0627\u062d \u0627\u0644\u062a\u064a \u062a\u0645 \u0627\u0644\u062d\u0635\u0648\u0644 \u0639\u0644\u064a\u0647\u0627 \u0628\u0627\u0644\u0637\u0631\u064a\u0642\u0629 \u0627\u0644\u0648\u0632\u0646\u064a\u0629.<\/p>\n\n\n\n

\u062b\u0627\u0646\u064a\u064b\u0627\u060c \u0639\u0646\u062f\u0645\u0627 \u062a\u0643\u0648\u0646 \u0642\u064a\u0645\u0629 EC25 \u0623\u0643\u0628\u0631 \u0645\u0646 5 \u062f\u064a\u0633\u064a \u0633\u0645-1\u060c \u062a\u0648\u0635\u0644\u0646\u0627 \u0625\u0644\u0649 \u0627\u0644\u0645\u0639\u0627\u062f\u0644\u0629 \u0627\u0644\u062a\u0627\u0644\u064a\u0629:<\/p>\n\n\n\n

mg\/l = 761.00 EC25<\/sub> dSm-1<\/sup> \u2013 180.316.<\/p>\n\n\n\n

\u0623\u064a\u0636\u064b\u0627\u060c \u0639\u0646\u062f \u0627\u0644\u062a\u0639\u0648\u064a\u0636 \u0641\u064a \u0647\u0630\u0647 \u0627\u0644\u0645\u0639\u0627\u062f\u0644\u0629\u060c \u062d\u0635\u0644\u0646\u0627 \u0639\u0644\u0649 \u0646\u062a\u0627\u0626\u062c \u0642\u0631\u064a\u0628\u0629 \u062c\u062f\u064b\u0627 \u0645\u0646 \u0643\u0645\u064a\u0629 \u0627\u0644\u0623\u0645\u0644\u0627\u062d \u0627\u0644\u062a\u064a \u062a\u0645 \u0627\u0644\u062d\u0635\u0648\u0644 \u0639\u0644\u064a\u0647\u0627 \u0628\u0627\u0644\u0637\u0631\u064a\u0642\u0629 \u0627\u0644\u0648\u0632\u0646\u064a\u0629.<\/p>\n\n\n\n

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\u0627\u0644\u0643\u0644\u0645\u0627\u062a \u0627\u0644\u0645\u0641\u062a\u0627\u062d\u064a\u0629: \u0627\u0644\u0645\u0648\u0635\u0644\u064a\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629\u060c \u0625\u062c\u0645\u0627\u0644\u064a \u0627\u0644\u0645\u0648\u0627\u062f \u0627\u0644\u0635\u0644\u0628\u0629 \u0627\u0644\u0630\u0627\u0626\u0628\u0629\u060c \u0627\u0644\u062a\u062e\u0641\u064a\u0641\u060c \u062c\u0648\u062f\u0629 \u0627\u0644\u0645\u064a\u0627\u0647. \u0645\u064a\u0627\u0647 \u0627\u0644\u0622\u0628\u0627\u0631<\/strong>.<\/p>\n\n\n\n

<\/p>\n\n\n\n

BY:<\/p>\n\n\n\n

Abdullah Al-Aswad<\/strong><\/td>Abd ElMonem Zayed<\/strong><\/td><\/tr>
\u0639\u0628\u062f\u0627\u0644\u0644\u0647 \u0627\u0644\u0623\u0633\u0648\u062f<\/strong><\/td>\u0639\u0628\u062f \u0627\u0644\u0645\u0646\u0639\u0645 \u0632\u0627\u064a\u062f<\/strong><\/td><\/tr>
Department of Soil and Water, Faculty of Agriculture, Sebha University, Libya<\/td>Department of Soil and Water, Faculty of Agriculture, Suez Canal University, Egypt<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
Ibrahim Issa<\/strong><\/td><\/tr>
\u0625\u0628\u0631\u0627\u0647\u064a\u0645 \u0639\u064a\u0633\u0649<\/strong>
Bachelor’s Student, Department of Soil and Water, Faculty of Agriculture, University of Sabha, Libya<\/td><\/tr><\/tbody><\/table><\/figure>\n\r\n\t\t
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<\/h4>\r\n\t\t\t\t\t<\/div>\r\n\t\t\t\t\r\n\t\t\t\t
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<\/div>\r\n\r\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\t<\/div>","protected":false},"excerpt":{"rendered":"

Abstract A laboratory experiment was conducted in the Soil Chemistry and Fertility Laboratory at the Faculty of Agriculture – Sebha University, Libya to study the effect of the relationship between electrical conductivity and total dissolved salts estimated by the gravimetric method and the effect of dilution of some groundwater samples on the electrical conductivity. To …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[145],"tags":[],"class_list":["post-4419","post","type-post","status-publish","format-standard","","category----1"],"_links":{"self":[{"href":"https:\/\/journal.ziu.edu.sy\/index.php?rest_route=\/wp\/v2\/posts\/4419","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/journal.ziu.edu.sy\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/journal.ziu.edu.sy\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/journal.ziu.edu.sy\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/journal.ziu.edu.sy\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4419"}],"version-history":[{"count":2,"href":"https:\/\/journal.ziu.edu.sy\/index.php?rest_route=\/wp\/v2\/posts\/4419\/revisions"}],"predecessor-version":[{"id":4472,"href":"https:\/\/journal.ziu.edu.sy\/index.php?rest_route=\/wp\/v2\/posts\/4419\/revisions\/4472"}],"wp:attachment":[{"href":"https:\/\/journal.ziu.edu.sy\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4419"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/journal.ziu.edu.sy\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4419"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/journal.ziu.edu.sy\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4419"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}