Ag8n 17 research notes and 17 wiki edits | Joined over 1 year ago

Retired, after 28 years, as an analytical chemist from a major pharmaceutical corporation.











Is Lego Spectrometer Kit able to detect Glucose?

kokoz asked about 6 months ago

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answered on Nov 14, 2018 0

answered on Nov 20, 2018 0

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Dissolved Oxygen Testing and Citizen Science

belkinsa asked about 8 months ago

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answered on Oct 05, 2018 1

answered on Oct 05, 2018 3

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Anyone working on environmental lead exposure / poisoning?

read_holman asked about 9 months ago

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answered on Aug 15, 2018 0

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answered on Aug 16, 2018 1

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answered on Aug 21, 2018 0

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What is a good way to track vehicular traffic?

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stevie asked about 10 months ago

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answered on Jul 14, 2018 0

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answered on Jul 18, 2018 0

answered on Aug 07, 2018 0

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Who do you contact on stormwater concerns?

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stevie asked about 11 months ago

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answered on Jun 20, 2018 0

answered on Jun 23, 2018 0

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What are sources of stormwater pollution?

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stevie asked about 11 months ago

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answered on Jun 19, 2018 0

answered on Jun 23, 2018 0

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Can you detect pvc microplastics with a nvdi camera?

Ag8n asked about about 1 year ago

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answered on Jun 10, 2018 1

answered on Jun 11, 2018 0

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Has anyone experienced measuring and analyzing microplastics?

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niklasjordan asked about about 1 year ago

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answered on May 17, 2018 1

answered on May 29, 2018 1

answered on Dec 03, 2018 0

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PAHs spectra

mephiengineer asked about about 1 year ago

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answered on Apr 10, 2018 0

answered on Apr 11, 2018 0

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Comments

Comment Last activity Moderation
" Ref web.physics.ucsb.edu/~lecturedemonstrations/composer/pages/36.39-helium-filled balloon " | Read more » 12 days ago
" It depends on the weight of what you are trying to lift. At sea level, based on the ideal gas law, the amount you can lift is 1.02 g of pay load..." | Read more » 12 days ago
" The last I knew, it took calibration to set up the wavelength. One way of doing that was with a compact florescent lamp. But there may have been..." | Read more » 16 days ago
" Green is about 550 nm. Can you tell me the application the local people would like to use it for? Regards " | Read more » 17 days ago
" Consumer reports did an evaluation of radon test kits a few years ago. Might be a good place to start. " | Read more » 17 days ago
" You usually measure visible spectrum in nanometers (nm). Resolution is measured the same way, but tested much differently. Can you give more inf..." | Read more » 17 days ago
" The United States pharm. had a lot of tests for lead and other elements( like arsenic and barium). You can't argue with its scientific validity- ..." | Read more » about 1 month ago
" My mistake, it chemiluminesces in the red, not the blue. Sorry about that. " | Read more » about 2 months ago
" I've used ion chromatography(IC) to analyze for a number of ions, including nitrate and nitrite. The new instruments dedicated to IC are much bet..." | Read more » about 2 months ago
" Don't know exactly how you want the spreadsheet fille d in on edxrf. I have used it extensively, in an r&d environment. I've only used a han..." | Read more » about 2 months ago
"Warren got most of the problems with kjeldahl. Here are a few more. Kjeldahl testing takes some specialty glassware. It's not terribly hard to l..." | Read more » about 2 months ago
" The only other thing to point out- all these calculations assume the particles are spheres. We had particle surface area measuring equipment. T..." | Read more » 2 months ago
" On pcbs (it's the chlorine part I 'm worried about, here), whenever you put a chlorine containing material in a flame, the flame should turn green..." | Read more » 2 months ago
" From a quick look, it seems that PAHs and PNAs (polynuclear aromatic hydrocarbons) are the same thing. We did PNA analysis on carbon black that w..." | Read more » 2 months ago
" You can buy the instruments with a microprocessor attached. All you have to do is take a syringe, put the liquid in the glass tube, and it will r..." | Read more » 3 months ago
" The reason multimeters aren't used for measuring the resistance of a solution is polarization. It's a fancy word, but by passing direct current t..." | Read more » 3 months ago
" You might want to look into ANDalyze. They use a new technology based on DNA for heavy metal analysis in water samples. I'd need to see validati..." | Read more » 3 months ago
" First off, spectrometers are much more common than spectrophotometers, these days. And cheaper too. T he method you referenced relies heavily on..." | Read more » 3 months ago
" I've used a version of this method. We used it for lead and just for visual comparison. There was a link for it but it wouldn't work. It was th..." | Read more » 3 months ago
" I'm downloading it now. Give me a day or two to go through it. Thanks! " | Read more » 3 months ago
" A good step forward. Congratulations! Maybe @falbriard could use these ideas for some of his work. " | Read more » 3 months ago
" There are plenty of ways to monitor it. Most importantly of them are expensive. The sulfur smell was probably hydrogen sulfide. There are some d..." | Read more » 3 months ago
" You might be able to find some thing. Let's take it step by step. First, the only one of those metals that has any color in the Vis is chromium. ..." | Read more » 3 months ago
" If you can afford it, you can take air samples and then later inject them into a gas chromatograph/mass spectrometer (GC/MS). Couple that with a ..." | Read more » 3 months ago




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