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October 2015 Newsletter

ICP Operations & Techniques Conference to be Annual Event

First, let us thank everyone who attended this year's Inductively Coupled Plasma (ICP) Operations & Techniques conference, inside the Inn at Virginia Tech. Your desire for continued education and comradery among your chemistry peers was an uplifting confirmation of why we first developed this conference.

If you haven't already, take a look at the photos from this year's conference and Inorganic Ventures headquarter tour, click here.

For those who were unable to attend, you'll be pleased to know that due to the demand for the conference and positive feedback we have received from this year's attendees, we are already beginning to plan our 2016 conference!

Details on the subject matter to be covered, featured speakers and conference highlights will be released as we finalize the agenda. Thank you again to all those who attended this year's inaugural event and we look forward to seeing everyone in 2016.


Have a Happy Chemistry-Inspired Halloween

Halloween provides children a plethora of opportunities to indulge, but it also delivers chemistry geeks like us a chance to show off our spooky skills. We all know chemistry is fun, and with this series from the American Chemical Society, so will your friends, family and neighbors this Halloween.


Creating Multi-Element Blend (MEB)

You have a shelf full of single element solutions and reagents, and need to make a multi-element blend (MEB). There are a number of important questions you will be asking yourself, such as what matrix to use, how stable will the blend be and what container material should you use. Inorganic Ventures senior technical advisor and CEO, Dr. Paul Gaines, has the answers to these and other important MEB questions. Read More.


Ask The Experts

Q1: Measurement and Results:

I am a PhD candidate looking to acquire a custom multi-element standard for my project, which is looking at relationship of the metal content of the soil profile and plant seed material in order to determine the region at which the seed was sampled from. I attend to most of the analysis on an ICP-MS instrument and maybe an ICP-OES for the major elements, so ideally I want a multi-element standard which contains: Mg, Al, Ca, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Sr, Rb, Mo, Cd, Sn, Sb, Ba, Hg, and Pb.

When designing a multi-element standard, is it better to make up all the analytes at the same concentration, or vary their concentrations to trends you expect to see? (eg. I'd expect the Mg, Fe, Al and Ca content of the soils to be much larger than the seeds).

Click here for the answer.

Q2: Sample Preparation

First, thank you for providing the wonderful resources on your website. Second, I was reviewing your Sample Preparation Guide regarding the fusing process for Titanium Oxides. I am wondering if you could clarify a few points or maybe offer some advice regarding for our case.

We are trying to measure the Ti level in vulcanized rubber samples, with the source being TiO2. We currently possess an MP-AES instrument which is not compatible with HF, so we are looking into the fusion techniques with pyrosulfate. We plan to ash the rubber sample at 850-900C so that should put the Ti in the brookite form. We then plan to fuse the residue with pyrosulfate prior to digestion and analysis on the MP-AES. I have two questions regarding these steps.

  1. When fusing the samples with potassium pyrosulfate, I see the ashing guide recommends 500C, but for how long do you recommend? We possess a fluxer so the heating and agitation is automated.
  2. The guide indicates that the fuseate is soluble in acids such as 30% sulfuric. For the MP-AES, we would prefer to be in dilute nitric acid or dilute aqua regia. Do you think the fuseate would be soluble in concentrated nitric or concentrated 1:3 nitric + HCL? Also, do you think the material will be stable once diluted to 2% nitric or dilute 1:3 nitric + HCL (~ 1% nitric & 1.6% HCL), which are the typical run conditions?

Click here for the answer.

 

More Technical Questions Answered by our Experts at inorganicventure.com.


Stop By and Meet Us!

We enjoy chatting with you through email, but would love to meet you in person! Inorganic Ventures will be attending the 2016 Winter Conference on Plasma Spectrochemistry, January 10-16, in Tucson, Arizona. Stop by and meet our team of experts face to face.


Jokes & Riddles

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