Linkedin - Used to track visitors on multiple websites, in order to present relevant advertisement based on the visitor's preferences.Īdvertisement cookies are used to provide visitors with relevant ads and marketing campaigns. The purpose of the cookie is not known yet. This ensures that behavior in subsequent visits to the same site will be attributed to the same user ID. It is used to persist the random user ID, unique to that site on the browser. This cookie is set when the customer first lands on a page with the Hotjar script. Next time, we'll configure internal standards, matrix spike compounds, and surrogates for automated data processing by the quant macro.Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. The mass fragment with the highest response does not always make the best quantitation ion, especially if it has a relatively low m/z (less than 50) because there is commonly high background responses for these ions. Generally, when choosing quantitation and qualification ions, you will want to use the M + molecular ion, the C 13 isotope (M+1) + or halogen isotope (M+2) +, as well as an ion that can be explained by a common mechanism, such as the loss of a ring, halogen, or hydrogen. Make sure you change the Quant signal to "Target Ion." If you don't know what qualifiers to use, you can look up the EI mass spectra at the NIST website. If you already know the elution order of your compounds, you can enter them one at a time.ĮPA Method 524.3 - Table 4 lists the recommended quantitation ion and associated internal standard (IS) for each of the target analytes. If you go back to InitCal menu, and select "Edit Compounds," the same Edit Compounds dialog box from before appears, but this time, when you click "Insert Above," you should see the first page of the compound info screen. Generally, I deal with large compounds lists (like 8260 or 8270) and find the peak selection process tedious. Personally, I don't like this interface, and prefer manually entering the compound info.
Once you are satisfied with your selections for the Quant Database Globals, click enter, and the Edit Compounds dialog box should appear.Ĭlick "Insert Above" and this brings up the "Quant Setup" interface (shown below), where you can select peaks by double right clicking them, name them, and select quant and qualifier ions. The same goes for the rest of information in the New Compound Info box below. The default integration parameter file is events.e you can create specific integration parameters for specific compounds, but you'll want to enter your default integration file here so you don't need to type it in for every compound later. There are a few things worth mentioning here. Today's tutorial will focus exclusively on the EnviroQuant version of A.03, and will cover populating the calibration table with compounds using a few compounds from the first internal standard group of EPA Method 524.3. We will deal exclusively with the initial calibration menu (InitCal) which is shown below, though "save method" is found under the File menu.įirst, you will want to set your calibration's global parameters, and this is done under the "Set Up Quantitation" menu option.
Chemstation chemicals msds software#
Officially, HP only supported Windows 95, but Windows 98 Second Edition was an extremely stable OS, and my old lab had good luck running the software on this platform.
Chemstation chemicals msds install#
In order to demonstrate A.03 functionality, I had to run down a working copy of Windows 98 and install it in a virtual computer in Windows 7 because G1701AA.03 requires a 16 bit version of Windows. Unfortunately, we are controlling this instrument from an old computer running Windows NT 4.0 and MSD ChemStation G1701BA.00. Fortunately, we still have a 5890/5971 in the lab. Some of the feedback I received after my last post was that most of the small environmental labs out there are still running 59 MSDs off the old G1701AA.03 software, and that demonstrating data processing techniques in G1701EA.02 may not be relevant.
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