Definitive results Decisive actions Onsite laboratorygrade rapidresponse testing
Definitive results. Decisive actions. On-site, laboratorygrade, rapidresponse testing
The Problem Traditional lab-based water analysis is slow Laboratory Testing Collect sample (1 -L bottle) Ship to lab (at 4°C) Wait for lab to test sample Wait for results Receive (paper) test report Three-week process for >>$50 Onda. Via System Collect sample (<10 -m. L) Test (on-site, <5 minutes) Analytics On-site, 5 -minute test for $50
Broad Applicability Onda. Via’s technology replaces lab testing for any compound in any liquid. Chemicals Applications Amines Corrosion control Triazines H 2 S scavenging, pesticides Se, As, Cr Waste water TCE, DBP Environmental, drinking water Lead Drinking water @ low-ppb levels Analysis kit Pre-treatment or pre- Instrument and software concentration methods
Technology and Product Based on our e. SERS™ detection backed by eleven issued US Patents Monoethanolamine repeatability Average: 27. 8± 3. 9 ppm Average: 76. 4± 5. 1 ppm
Selenium analysis Regulatory limits (drinking water) 50 -ppb, although some States are lower Applications Refinery waste water Coal-fired power plants / flue-gas desulfurization water Current methods ICP/MS and colorimetry
Selenium speciation Test is specific for Se(VI) Se reduced during biological treatment of waste water Oxidize treated water using bleach and/or H 2 O 2 at high p. H to convert all Se(IV) to Se(VI) Facility ICP/MS (ppb) Onda. Via (ppb) 1 (untreated) 400 405 2 (untreated) 370 420 1 (treated) 55 ND 2 (treated) 160 ND 1 (treated, ox) -- 70 2 (treated, ox) -- 145 Fieldable speciation test: � First measure Se(VI) � Oxidize to determine total � Se(IV) is the difference
Arsenic analysis �Arsenic exists in natural waters predominantly as arsenite [As(III)] and arsenate [As(V)] �Regulatory limit: � 10 -ppb total As in drinking water �But As(III) is more hazardous that As(V) �Current methods: �Total via colorimetry – arsenic is converted to As(III) and then to arsine gas �Speciation via HG-AAS
Arsenic speciation Arsenite [As(III)] Arsenate [As(V)]
Target Specifications Arsenic and selenium Trichloroethylene (TCE) Five minute test <10 -ppb detection limit Ability to speciate Five minute test 5 -ppb detection limit Still early stage (Phase I) As(III) vs As(V) Se(IV) vs Se(VI) Selenium commercially available, arsenic available for beta testing TCE
On-site, laboratory-grade, DIY, rapid-response testing �First ever commercial, quantitative analytical method using surface-enhanced Raman spectroscopy �Broad applicability from anions to metals to VOCs �Applications from QA/QC to process control to environmental monitoring and remediation Contact Mark Peterman Onda. Via, Inc. 510 -576 -0476 info@ondavia. com Arsenic and TCE work funded under NIH/NIEHS SBIR Phase I grants 1 R 43 ES 025083 and 1 R 43 ES 026513
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