{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11480556","patent":{"patent_number":"US-11480556","title":"Method and apparatus for detecting trace amounts of copper and silver in water","assignee":null,"inventors":[],"filing_date":"2020-04-27T00:00:00.000Z","publication_date":"2022-10-25T00:00:00.000Z","cpc_codes":["G01N","G01N","G01N"],"num_claims":14,"abstract":"Disclosed is a real-time method for detecting copper and silver in water in parts per billion. Total silver is detected by adding a 2% nitric acid solution to the sample; after ten minutes, adding a buffer solution comprising water, sodium bicarbonate, sodium carbonate and EDTA to the sample; adding an indicator comprising Cadion 2B, EtOH, and Triton X-100 to the sample; after one minute, reading the absorbance of the sample using a spectrophotometer with a target peak of 515 nm; and determining the silver concentration by comparing the absorbance of the sample to the absorbances of known silver standards. Total copper is detected by adding a 2% nitric acid solution to the sample; after ten minutes, adding a buffer/indicator solution to the sample, where the solution comprises water, sodium citrate dihydrate, hydroxal amine hydrochloride and bathocuproine disulfonate; after one minute, reading the absorbance of the sample using a spectrophotometer with a target peak of 480 nm; and determining the copper concentration by comparing the absorbance of the sample to the absorbances of known copper standards. A monitoring device for determining the level of copper or silver in a sample implements the disclosed methods."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for detecting trace amounts of copper and silver in water","description":"Disclosed is a real-time method for detecting copper and silver in water in parts per billion. Total silver is detected by adding a 2% nitric acid solution to the sample; after ten minutes, adding a b","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11480556","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-11480556","citation_suggestion":"Patentable. \"Method and apparatus for detecting trace amounts of copper and silver in water\" (US-11480556). https://patentable.app/patents/US-11480556","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11480556","json":"https://patentable.app/api/llm-context/US-11480556","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T11:57:32.124Z"}