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Products NIST

Fluoride tests and standard solutions

Merck offers a full range of products for monitoring water quality in the field or in the lab. All developed in compliance to the rigorous standards more

News NIST

• Super-nanotubes: 'Remarkable' spray-on coating combines carbon nanotubes with ceramic

  Researchers from the National Institute of Standards and Technology (NIST) and Kansas State University have demonstrated a spray-on mixture of carbon nanotubes and ceramic that has unprecedented ability to resist damage while absorbing laser light. Coatings that absorb as much of the energy of high- more

• NIST research highlights promise of AFM-IR for quantitative nanoscale chemical analysis.

  Anasys Instruments announced a new paper authored by Dr Andrea Centrone and his colleagues at NIST published recently in Small. Dr Centrone's team reported on experiments that carefully studied the AFM-IR signal strength versus sample thickness. The experiments showed that the AFM-IR signal increase more

• New NIST SRM supports the fight against terrorist bombings

  The National Institute of Standards and Technology (NIST) has released a new standard reference material (SRM) to aid in the detection of two explosive compounds that are known to be used by terrorists. Researchers designed the new test samples to simulate the size and behavior of residues that rema more

White papers NIST

• Measuring particle size using modern laser diffraction techniques
  

  Many different techniques have been devised for determining particle size distribution, but for a wide range of industries laser diffraction has become the preferred choice. Laser diffraction, alternatively referred to as Low Angle Laser Light Scattering (LALLS), can be used for the non-destructive analysis of wet or dry samples, with particles in the size range 0.02 to 2000 micron and has inherent advantages which make it preferable to other options for many different materials. more

• Size and element specific determination of Ag nanoparticles in consumer spray products using asymmetric flow field flow fractionation (AF4) coupled to ICPMS
  

  The use of nanoparticles in consumer products shows a tremendous increase over the past years. A study of the Woodrow Wilson International Centre for Scholars reported that between 2005 and today the number of products based on nanoparticles increased almost twentyfold from 54 to 1015. As active compounds these products contain ZnO for surface protection, TiO2 for sun screen or Ag for anti-bacterial purposes, only to name a few applications. Furthermore, Si, C and Au are frequently used. So far, no data are available concerning the release and the behaviour of nanoparticles during the spray process. Therefore, in spite of their beneficial properties, possible risks for humans and the environment need to be thoroughly investigated. Especially the exposure pathway via the lung seems to be very critical, as could be shown in a study recently published in the Journal of Nanoparticle Research more

Publications NIST

• Stability Assessment of Gas Mixtures Containing Monoterpenes in Varying Cylinder Materials and Treatments

  Studies of climate change increasingly recognize the diverse influences exerted by monoterpenes in the atmosphere, including roles in particulates, ozone formation, and oxidizing potential. Measurements of key monoterpenes suggest atmospheric mole fractions ranging from low pmol/mol (parts-per-trill more

• Multiplexed Orientation and Structure Analysis by Imaging Near-Edge X-ray Absorption Fine Structure (MOSAIX) for Combinatorial Surface Science

  Near-edge X-ray absorption fine structure (NEXAFS) spectroscopy, as a technique, offers detailed information about the bonding environment of molecules at a surface. However, because it is a synchrotron based method, beam-time is limited and users must typically prioritize and narrowly define the sc more

• Chemical composition of soil evolving from municipal solid waste using energy dispersive X‐ray fluorescence

  Municipal solid waste (MSW) generated in the city of Kolkata, India has been dumped at a site known as ‘Dhapa’, situated in the eastern fringes of the city, since the middle of 19th century. The soil in this area is expected to be evolving from several layers of dumped MSW through many decades. Ea more

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