{"id":11342,"date":"2026-04-16T01:15:31","date_gmt":"2026-04-16T01:15:31","guid":{"rendered":"https:\/\/versicolor.ca\/sandylakebedford\/?page_id=11342"},"modified":"2026-04-16T01:16:50","modified_gmt":"2026-04-16T01:16:50","slug":"ec-of-salt-pile-pool","status":"publish","type":"page","link":"https:\/\/versicolor.ca\/sandylakebedford\/waters\/lit-links\/ec-notes\/ec-of-salt-pile-pool\/","title":{"rendered":"EC of Salt Pile Pool"},"content":{"rendered":"

An odd discrepancy in the EC-Temperature relationship<\/strong><\/p>\n

As stated above, “Conductivity increases approximately 2-3% per 1\u00b0C increase in temperature”. Bruce S. in his volunteer monthly monitoring of EC in surface waters associated with Sandy Lake, makes in-situ measurements of temperature and EC, and then brings a sample back to his home which he leaves at room temperature overnight and then measures them again the next day. We have kept records of these dual measurements – see Original Field Observations on the Seasonal Monitoring<\/a> page – and typically the next-day EC values are somewhat higher (as is the temperature).<\/em>
\nIn 2023 he began occasional sampling of some standing water near a salt pile within the watershed. Here are\u00a0 two sets of values:<\/em><\/p>\n

Upper Pond by salt storage<\/strong><\/em><\/p>\n\n\n\n\n\n\n\n
Date<\/strong><\/em><\/td>\nEC (uS\/cm)<\/strong><\/em><\/td>\nTemp (deg C)<\/strong><\/em><\/td>\n<\/tr>\n
May 5<\/em><\/td>\n1693<\/em><\/td>\n12.6<\/em><\/td>\n<\/tr>\n
Next Day<\/em><\/td>\n908<\/em><\/td>\n17.7<\/em><\/td>\n<\/tr>\n
May 8<\/em><\/td>\n3066<\/em><\/td>\n14.3<\/em><\/td>\n<\/tr>\n
Next Day<\/em><\/td>\n2107<\/em><\/td>\n20.4<\/em><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

I had commented that I thought the Next Day value for the May 5 sample was odd, so he took another sample, and obtained similar results. Clearly, EC decreased after overnight incubation\/higher temperature. This suggests there was some chemical changes overnight, perhaps related to an additive in the road salt.<\/em><\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"

An odd discrepancy in the EC-Temperature relationship As stated above, “Conductivity increases approximately 2-3% per 1\u00b0C increase in temperature”. Bruce S. in his volunteer monthly monitoring of EC in surface waters associated with Sandy Lake, makes in-situ measurements of temperature … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":6124,"menu_order":50,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-11342","page","type-page","status-publish","hentry"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/versicolor.ca\/sandylakebedford\/wp-json\/wp\/v2\/pages\/11342","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/versicolor.ca\/sandylakebedford\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/versicolor.ca\/sandylakebedford\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/versicolor.ca\/sandylakebedford\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/versicolor.ca\/sandylakebedford\/wp-json\/wp\/v2\/comments?post=11342"}],"version-history":[{"count":2,"href":"https:\/\/versicolor.ca\/sandylakebedford\/wp-json\/wp\/v2\/pages\/11342\/revisions"}],"predecessor-version":[{"id":11345,"href":"https:\/\/versicolor.ca\/sandylakebedford\/wp-json\/wp\/v2\/pages\/11342\/revisions\/11345"}],"up":[{"embeddable":true,"href":"https:\/\/versicolor.ca\/sandylakebedford\/wp-json\/wp\/v2\/pages\/6124"}],"wp:attachment":[{"href":"https:\/\/versicolor.ca\/sandylakebedford\/wp-json\/wp\/v2\/media?parent=11342"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}