When your work rests on Atomic Absorption Spectroscopy (AAS), speed is very important in the lab. Your whole plan can go awry if there are long lines of samples, late results, or tests that need to be done again for no reason. You can cut down on time without losing accuracy if you follow the right steps. This article will teach you how you can make AAS sample analysis faster, reliable, and less frustrating.
Instead of doing things the same way you always have, try microwave digestion when you can. Faster and more reliable than open-vessel digestion, it breaks down food much faster. Make sure to clean your samples first to get rid of any debris. Use official sources to check for truth right away so you won't have to run tests again later. Also, Plan your run ahead of time to avoid confusion and cut down on wait times.
Make sure the lamp is aligned correctly and that the wavelength is correct, because even a small error can make the system less sensitive. Check if you use the right slit width and flame conditions for each metal. If you change metals a lot, use pre-programmed ways to save time on setting everything up by hand. Also, auto-samplers are very helpful, and when you're calibrating, use fewer points if you can.
Matrix effects can happen without warning and give you strange results, which may make you question everything and even start over with the process. In order for you ro keep that from happening, use matrix matching and make sure that the background of your sample and the calibration standards are the same. Aside from that, diluting can help, but only if it doesn't drop the concentration too much.
If you want to keep things running smoothly, make it a habit to check and clean important parts like the burner, nebulizer, and spray chamber. In addition to that, if you want to protect the system, clean it right away if you see any salt buildup and use high-purity chemicals and deionized water when preparing the sample. Remember, record your maintenance so you always know what has been fixed or cleaned.
You shouldn't use the same clean time, instead, change it depending on the element and how strong the concentration is. Agilent atomic absorption spectroscopy deionized water works well, but something acidic may get the job done better without messing up the next test. Setting up a custom way to automate the rinse saves time and keeps things going efficiently without cleaning too much. (Source: https://www.agilent.com/en/product/atomic-spectroscopy/atomic-absorption)
Once you're done setting up your instrument and it's ready, group samples that are similar together so you don't have to change the settings too often. Run all the low-concentration water tests first, for instance, before moving on to the higher ones. Get the next batch ready while you wait between runs. Look over what took too long at the end of the day so you can fix it and move faster the next day.
Your AAS process can go faster and be more reliable if you plan better, use your tools wisely, and do simple routine checks. Once these habits are part of your lab's daily work, delays are less likely to happen and answers come faster. Don’t forget to use these tips right away to see a change in your next batch. You can finish your runs faster and stay ahead of schedule if you save even a minute.
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