direct exposure probe

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direct exposure probe

A variant of the direct insertion probe (or direct probe) in which the sample to be analysed by mass spectrometry is coated on a surface that is inserted within the ion source of the spectrometer, and thus exposed directly to the ionisation beam in the source. The DEP can be used to generate mass spectra of otherwise nonvolatile sample molecules.
References in periodicals archive ?
Costimulation of BEAS-2B and primary HBE cells with DEP or OE and PAR-2-AP potentiated MMP-1 activation [Figure 2B; see also Supplemental Material, Figure 3D,E (doi:10.
An estimated bill can generate over-billing, which means the DEP is saying you consumed more water than was actually consumed.
In addition, the solid waste sector pays little to support the activities DEP is already doing for it.
REI Consultants will also need to fund a third party assessor to review the lab's abilities to meet accreditation standards as part of the consent order and agreement with DEP.
Birds can be carriers of WNV, and DEP tests dead birds for WNV to determine the virus' presence in the environment.
Of the RX products that were identified, 75 contained the phthalate polymers HMP, CAP, and PVAP (data not shown), and 50 contained the ortho-phthalates DEP and/or DBP (6 contained DBP, and 1 contained both DEP and DBP) (Table 1).
The DEP has issued a series of administrative orders and penalties, she said.
Contact: Charlie Young, PA DEP, phone 717-787-1323.
The DEP should have gone back and checked the maps," said Sarah Holtam of Coal River Mountain Watch, a nonprofit based in Coal River Valley, the region where the school is located.
Unfortunately, DEP has extended that exemption to the much larger and more polluting gas drilling operations in the Marcellus Shale," continued Jarrett.
Scott Wright, the DEP scientist who directs the study of dead manatees, said the growing number of deaths makes the animals particularly susceptible to an environmental catastrophe such as the cold snap in 1990 that killed nearly 50 animals.
Connecticut Superior Court Judge Martin Nigro issued a temporary injunction on April 20 barring DEP Commissioner Timothy R.