{"id":3120,"date":"2026-08-06T15:24:26","date_gmt":"2026-08-06T13:24:26","guid":{"rendered":"https:\/\/gekkophotonics.com\/?post_type=case-study&p=3120"},"modified":"2026-08-06T15:46:13","modified_gmt":"2026-08-06T13:46:13","slug":"kontrola-stezenia-tiosiarczanu-amonu-ats-w-nawozie-siarkowym","status":"publish","type":"case-study","link":"https:\/\/gekkophotonics.com\/en\/case-study\/kontrola-stezenia-tiosiarczanu-amonu-ats-w-nawozie-siarkowym\/","title":{"rendered":"Control of ammonium thiosulfate (ATS) concentration in sulfur fertilizer"},"content":{"rendered":"
\n
\n
Industry<\/dt>\n
Produkcja nawoz\u00f3w siarkowych<\/dd>\n<\/div>\n
\n
Scope<\/dt>\n
Control of ammonium thiosulfate (ATS) concentration and N\/S ratio<\/dd>\n<\/div>\n<\/dl>\n

Client context<\/h2>\n

ATS (ammonium thiosulfate, approximately 12% nitrogen and 26% sulfur) is a sulfur fertilizer and nitrification inhibitor, produced by absorption of gases and used as an additive to UAN or applied directly to sulfur-deficient soils.<\/p>\n

ATS concentration and N\/S ratio must meet specification; deviations lead to customer complaints and issues with CE certification. The line produces a continuous stream, and offline composition measurement takes 20 to 60 minutes.<\/p>\n

Challenge.<\/h2>\n
    \n
  • Iodometric titration of thiosulfate takes 20\u201330 minutes; full anion analysis by ion chromatography takes 30\u201360 minutes.<\/li>\n
  • The absorption process produces a continuous stream, so offline measurement is too slow for real-time control.<\/li>\n
  • Deviations in N\/S ratio result in complaints and risk during CE certification (EU Regulation 2019\/1009).<\/li>\n
  • Densitometry provides only an approximate concentration reading, without qualitative composition data.<\/li>\n<\/ul>\n

    Solution<\/h2>\n

    Spectrally\u2122 X1 measures ammonium thiosulfate concentration and solution homogeneity inline, in the absorption process stream. It provides real-time composition control instead of spot-check laboratory sampling.<\/p>\n

    Raman is well suited for this measurement because the thiosulfate ion has strong, characteristic vibrational bands of sulfur bonds (S-O and S-S), clearly distinguishable from sulfates and other anions present in the solution. Water gives a weak signal and does not overwhelm the analyte, so composition can be tracked directly in the stream without sample preparation.<\/p>\n

    Results<\/h2>\n
    \n\n\n\n\n\n\n\n
    Metric<\/th>\nResult<\/th>\n<\/tr>\n<\/thead>\n
    What we measure in-line<\/td>\nammonium thiosulfate concentration and solution homogeneity (indirectly the N\/S ratio)<\/td>\n<\/tr>\n
    Time<\/td>\nin-stream control instead of 20\u201330 min iodometric titration<\/td>\n<\/tr>\n
    Compliance<\/td>\nEU Regulation 2019\/1009 (CE marking) \u2013 composition documentation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    What this means for your process<\/h2>\n

    If you produce ATS or UAN blends with sulfur addition, inline measurement allows you to maintain concentration and N\/S ratio within specification without waiting for the laboratory, reducing complaints and certification risk.<\/p>\n

    The most reliable way to confirm performance on your stream is a short feasibility study on real samples.<\/p>","protected":false},"excerpt":{"rendered":"

    Ammonium thiosulfate (ATS) must meet the specification for concentration and N\/S ratio, and offline measurement takes 20 to 60 minutes. We demonstrate how to control ATS concentration and solution homogeneity inline.<\/p>","protected":false},"author":1,"featured_media":3137,"menu_order":0,"comment_status":"closed","ping_status":"","template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","industry-grid":""},"class_list":["post-3120","case-study","type-case-study","status-publish","format-standard","has-post-thumbnail","hentry"],"blocksy_meta":[],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/gekkophotonics.com\/en\/wp-json\/wp\/v2\/case-study\/3120","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gekkophotonics.com\/en\/wp-json\/wp\/v2\/case-study"}],"about":[{"href":"https:\/\/gekkophotonics.com\/en\/wp-json\/wp\/v2\/types\/case-study"}],"author":[{"embeddable":true,"href":"https:\/\/gekkophotonics.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gekkophotonics.com\/en\/wp-json\/wp\/v2\/comments?post=3120"}],"version-history":[{"count":3,"href":"https:\/\/gekkophotonics.com\/en\/wp-json\/wp\/v2\/case-study\/3120\/revisions"}],"predecessor-version":[{"id":3164,"href":"https:\/\/gekkophotonics.com\/en\/wp-json\/wp\/v2\/case-study\/3120\/revisions\/3164"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/gekkophotonics.com\/en\/wp-json\/wp\/v2\/media\/3137"}],"wp:attachment":[{"href":"https:\/\/gekkophotonics.com\/en\/wp-json\/wp\/v2\/media?parent=3120"}],"curies":[{"name":"entry","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}