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Thanks to the generous support of Agilent Technologies, Inc. through its instruments placement program, the Environmental Metrology and Policy Program has a fully-equipped environmental metrology laboratory in White Gravenor Hall 404 for teaching and research. The metrology lab hosts four powerful research-grade instruments: Agilent Gas Chromatography-Mass Spectrometry (GC-MS), Agilent Liquid Chromatography-Mass Spectrometry (LC-MS), Aglient Inductively Coupled Plasma-Mass Spectrometry (ICP-MS), and Nicolet™ iN™10 Infrared Microscope (the latter was donated by the US Secret Service). These instruments are used by EMAP students for their lab courses and independent research projects. The specifications of these instruments are briefly described as follows. For more information, please contact the lab manager Dr. Dejun Chen


Agilent GC-MS


GC-MS

The Agilent GC-MS consists of an Intuvo 9000 ultra-fast GC system and a 5977B MS with an electron-ionization (EI) source and an autosampler. It’s built for labs that focus on applications such as environmental, chemical, petrochemical, food, forensic, and pharmaceutical analyses, and material testing, with the following specifications:

Intuvo 9000 GC

Connections

GC-on-Chips (Ferrule-free)

Heating

Direct Column Heating

Oven temperature range

+10 °C to 450 °C

Maximum temperature ramp

250 °C/min

Pressure control

0.001 psi (range of 0 to 150 psi)

Flow sensor accuracy

<±5 %

Retention time repeatability

<0.008 % or <0.0008 minutes

 

 

 

 

 

 

 

5977B MS

Detection limit

10 fg

Ion source temperature (EI)

150–350 °C

Quadrupole temperature

106–200 °C

Mass range

1.6–1,050 u

Mass accuracy

± 0.005

Mass axis stability

Better than 0.10 u/48 hours

Scan speed

20,000 u/sec


Agilent LC-TOF MS


LC-MS

Agilent LC-TOF MS consists of a 1260 Infinity II LC system and a 6230 TOF mass analyzer with an autosampler. It brings powerful analytical capability to a wide range of applications in fields that include food, forensic, environmental, and life sciences, toxicology and pharmaceuticals, with the following specifications.

1260 Infinity II LC

Degasser

4 channels; up to 10 mL/min flow

Pump pressure

Flexible Pump up to 800 bar

Multisampler

0 to 100 μL single-stroke injection

Multicolumn thermostat

10 degrees below ambient to 85 °C; up to four 30 cm columns

6230 TOF MS

Detection limit

1 pg  

Ion source

Dual ESI (Electrospray ionization)

Signal-to-noise ratio

> 10:1 at 1 pg injection

Mass range

25 to 20,000 u

Mass resolving power

22,000 for 1,522 m/z

Mass accuracy

< 1 ppm

Mass temperature stability

2 ppm accuracy within 2 °C drift per h

Spectral acquisition rate

30 spectra/second for m/z 100 to 3,200


Agilent ICP-MS


ICP-MS

The Agilent ICP-MS consists of a 7800 ICP and a quadrupole MS with an autosampler. It combines proven, robust hardware, auto-optimization tools, and pre-set methods to simplify routine analysis of drinking water, environmental wastes and elemental impurities in pharmaceutical product solutions, with the following specifications.

7800 ICP

Nebulizer

MicroMist (borosilicate glass)

Spray chamber

Scott-type double-pass (quartz) –5 °C to +20 °C

Plasma

27 MHz, Variable-frequency impedance matching 500 W to 1600 W

Torch Sampling depth

3 to 28 mm in 0.1 mm steps

Sampling cone

1 mm diameter orifice

Skimmer cone

0.4 mm diameter orifice

Collision cell gas

He (He-Gas Mode)

Quadrupole MS

Detection limit

0.1 ppt for 209Bi (No-Gas mode)

Mass range

2–260  u

Mass accuracy

0.3 – 1.0 u

Mass axis stability

< 0.05 u per day < 0.1 u per 6 months

Minimum dwell time

3 ms

Oxide

<1.5% for CeO/Ce

Isotope ratio precision

<0.1% RSD for 107Ag/109Ag


Nicolet™ iN™10 Infrared Microscope


IR Microscope

Nicolet™ iN™10 Infrared (IR) Microscope is an intuitive, innovative and integrated infrared microscope and was donated by the Criminal Investigative Division of US Secret Service. The IR microscope is an ideal instrument for analyzing environmental samples that include microplastics, polymers, rubbers, packaging, paints, coatings, compounding, microelectronics, pharmaceuticals, cement, cosmetics, textiles, fibers, pigments, paper chemicals, inks and adhesives, etc. Its specifications are as follows.

IR Spectrometer

Operational modes

Transmission, reflection, and attenuated total reflection (ATR)

Scan speed

Up to 10 scans per second @ 16 cm-1

Spectral range

7600–450 cm-1

Spectral resoltion

0.4 cm-1 maximum

Spectral signal over noise ratio

25,000:1 @ 4 cm-1 2min

Microscope

Working distance

16 mm x 16 mm maximum

Field of view

Real-time 500 micron

Space resolution of the MicroTip Ge-ATR crystal window

As small as 50 microns