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Automatic Mercury Analyzer for the Laboratory

AULA 254 AULA Fluorescence

Technical Specifications AULA 254 and AULA-Fluorescence

Measuring principle: Atomic Absorption, cold vapor technique ( CVAAS)
Atomic Fluorescence, cold vapor technique ( CVAFS)
Analytical wavelength: 253.65 nm
UV source: Electrodeless low-pressure mercury discharge lamp ( EDL)
Stabilization method: Reference beam technique
Detector: UV enhanced silicon photo diode
Channel photomultiplier, photon count mode
Optical cell: Entirely made of fused silica, ca. 230 mm length
Low reflection fluorescence cell
Stripping gas: Argon, 4~ 6 l/ h, stabilized with electronic mass flow controller ( MFC)
Gas-liquid separator: Bubble-free, non-foaming crossflow principle design
Sample gas dehumidifier: Thermoelectric principle ( desiccant-free, low surface area)
Reagent / sample pump: 3-channel peristaltic pump, stabilized fixed speed ( AULA -ASD: two pumps)
Autosampler: 53-place random access, carousel-type
Sample vials: 10 ml, glass; aluminium foil disc covers as accessory
Sample consumption: ca. 1 ml
Heating coil temperature
( AULA-ASD) : ca. 98 ° C
Detection limit: < 30 pg Hg
< 3 pg Hg
Measuring range: 10 ng/ L - 50 µ g/ L ( 10 ppt – 50 ppb)
0.5 ng/ L – 10 µ g/ L ( 0.5 ppt – 10 ppb)
Zero drift: Autozero before each measurement
Measuring duration: 60 – 180 seconds typical
Software: AULA-WIN, WindowsTM based
Electrical power supply: 115 V / 230 V~ ; 50 - 60 Hz, consumption ca. 100 W
AULA with ASD module: 150 W
Dimensions: Autosampler-reaction unit: 345 x 295 x 330 mm ( WxHxD)
Photometer: 160 x 450 x 360 mm
Bench space requirements: ca. 90 x 70 cm ( W x D) , without PC
Weight: approx. 14 kg total, without PC
Technical Specifications AULA 254 GoldTrap and AULA Fluorescence GoldTrap
Pre concentration principle: Amalgamation on gold surface and subsequent release by quick heating
Detection limit: < 5 pg Hg
< 0.5 pg Hg
Measuring range: 1 ng/ L – 5 µ g/ L ( 1 ppt – 5 ppb)
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