| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| Ag8n | "One of the chapters in the book is "Biosensors for the determination of heavy metals in water". The chapter is by Amra Odobasic, Indira Sestan, an..." | Read more » | almost 2 years ago | |||
| Ag8n | "There were some books on " Biosensors for environmental engineering" published a couple of years ago. They had chapters on heavy metal detection. ..." | Read more » | almost 2 years ago | |||
| Ag8n | "The reason I ask- the EPA testing will always be expensive. Sometimes you can do some "screening" pH tests that are much cheaper. These would be ..." | Read more » | almost 2 years ago | |||
| Ag8n | "If you shop on the commercial sites, there are claims that their kits ( for a variety of tests) will cover soil even though the kits are designed f..." | Read more » | almost 2 years ago | |||
| Ag8n | "Can you give more information on the pH test is being done? Who is doing it? What instrument is being used? Thanks for the help. " | Read more » | almost 2 years ago | |||
| Ag8n | "If a source like the sun or an incandescent lamp is used, then maybe using a photographic bg20 filter as a standard would do. The spectrum they a..." | Read more » | about 2 years ago | |||
| Ag8n | "There is a closely related chemical recently added to the USP for uv/vis standardization. It is a solution of didymium. Some places also use a gl..." | Read more » | about 2 years ago | |||
| Ag8n | "https://youtu.be/u5tUmdWALn0 Hopefully, this link works to the video " | Read more » | about 2 years ago | |||
| Ag8n | "Of you take a look at commercial instruments, they will usually use holmium oxide or other holmium salts for calibration. Great. These salts are ..." | Read more » | about 2 years ago | |||
| Ag8n | "Found something.It's a YouTube post by chem_talk on neodymium. It's a long way from complete, but according to the post, this rare earth isn't rar..." | Read more » | about 2 years ago | |||
| Ag8n | "Please do not take this wrong. Your work is impressive. But part of science is asking questions, including questions on the testing done. So here..." | Read more » | about 2 years ago | |||
| Ag8n | "Please double check the oxygen calculation and calibration of the instrument. Humans can't survive on that low a level of oxygen. So, at the very l..." | Read more » | about 2 years ago | |||
| Ag8n | "A further note. Wait until the source is identified to get the waste water/testing done. " | Read more » | about 2 years ago | |||
| Ag8n | "The local industries are required to report the chemicals they give off to the EPA. Some paperwork might give an idea of the chemical. Dealing wit..." | Read more » | about 2 years ago | |||
| Ag8n | "Yes,I see what you mean. Got a weird approach for the problem. First, please become a little familiar with rtlsdr dongles by going to rtl-sdr.com...." | Read more » | about 2 years ago | |||
| Ag8n | "Just going down that road a little bit further. What distance do you need to cover and at what data rate? There are wireless bands on 900mhz IS..." | Read more » | about 2 years ago | |||
| Ag8n | "I would encourage you to keep looking for mercury in soil. However, mercury is a difficult element to analyze safely and very dangerous to handle...." | Read more » | about 2 years ago | |||
| Ag8n | "Project CyAN with the EPA might be of interest. It is using a newly launched satellite to track cyanobacteria. The new satellite was launched 5-6..." | Read more » | about 2 years ago | |||
| Ag8n | "Ammonia, as from fertilizer, would also increase the pH. It would make the algae like the water, too. There are several methods to test for ammoni..." | Read more » | about 2 years ago | |||
| Ag8n | "Could you be more specific? What exactly the problems are? Algae blooms due to nitrogen runoff are being tracked in some of the great lakes by sa..." | Read more » | about 2 years ago | |||
| Ag8n | "How did you test the soil for mercury? " | Read more » | about 2 years ago | |||
| Ag8n | "I don't know if it's viable in this area or not. For blood analyzers, the approach one company was taking was photon counting. That was 15 years ..." | Read more » | about 2 years ago | |||
| Ag8n | "Yes, in many ways. For example, rain can clean the air, making it much better. On the other hand, under the right circumatances, a high pressure ..." | Read more » | about 2 years ago | |||
| Ag8n | "Your work is very impressive. And it seems like you are just a step away from identification. I wish I knew the exact step needed. The pellets a..." | Read more » | about 2 years ago |