chemical
chemical


Author Comment Last activity Moderation
paul_delamusica "For serious work at low cost, one should consider a used professional spectrometer. I am working on an old Hitachi 100-80 double beam spectrophotom..." | Read more » almost 3 years ago
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JSummers "Hi @super_smartaga, Your question will get better answers if you can answer some initial questions. What do you consider cheap? What wavelength ra..." | Read more » almost 3 years ago
liz "Hello @super_smartaga , Thanks for writing! I'll suggest two starting points: 1. watch the video on https://spectralworkbench.org/ 2. investigate t..." | Read more » almost 3 years ago
gretchengehrke "Table 8.2 in that doc is particularly useful. " | Read more » over 4 years ago
gretchengehrke "Here is a great reference document that helps parse out some different types of sampling for different study designs, depths of samples, etc. We co..." | Read more » over 4 years ago
JSummers "Building a spectrometer is a fine university project, but this will not work for detecting fentanyl. Fentanyl does not absorb in the range where t..." | Read more » over 4 years ago
stef "This may not be a project to determine the quantities of the subject of your concern. The spectrometer in question is at an entry level and the ana..." | Read more » over 4 years ago
liz "Upstate New York has learned the hard way about soil toxicity: after winning a court battle against Tonawanda Coke, this community science group is..." | Read more » about 5 years ago
warren "Via @shannon, the Louisiana Bucket Brigade (LABB) posted this: LABB quick report on the need for soil sampling post-Katrina: http://labucketbrigad..." | Read more » about 5 years ago
warren "@eustatic mentioned the segment on soil sampling in the Oil Testing Booklet we did: https://publiclab.org/wiki/diy-oil-testing-questions#Collect+a+..." | Read more » about 5 years ago
ronhuber "Thanks Mathew! Eustatic I have many more aerial photographs of that site from many angles both from this year and last. Google earth captures the ..." | Read more » about 8 years ago
eustatic "is this what other people who know the site are seeing? " | Read more » about 8 years ago
eustatic "http://www.epa.gov/superfund/programs/npl_hrs/quickscore.htm " | Read more » about 8 years ago
eustatic "this is awesome. unfortunately a lot of sites i deal with are oil exploration and production waste sites, so are exempt from these USA laws and EP..." | Read more » about 8 years ago
mathew "Are there other examples of briefs sent to the EPA? what should this look like? do folks working with the EPA around the Gowanus Canal or Gulf Coas..." | Read more » about 8 years ago