Microwave Plasma- Atomic Emission Spectrometer

Reference: 542535

Description: Microwave Plasma-Atomic Emission Spectrometer BOT6009

Requirement for procurement and installation of a Microwave Plasma- Atomic Emission Spectrometer (MP-AES) system (hereinafter referred to as “the System”)for the determination of minerals, in particular micronutrients, iron, zinc, copper, selenium, and phytic acid, but also contaminant trace elements in biological samples (whole blood, plasma, urine, feces), foods, and agricultural products at the National Food Technology Research Centre, Botswana (hereafter referred to as the “End-User”).

Requirements
3.1.Functional and Performance Requirements
The System shall meet the following functional and performance requirements:
3.1.1. The analysis of minerals (Fe, Zn, Cu, Se) in fortified (or native element content) shall be performed directly in acid dissolved samples, in an
automated system, allowing the simultaneous determination of several elements at once, at the ppm level.
3.1.2. In biological samples, restrictions determined by small amount of sample (250-500 µL plasma) are overcome by ppb detection limits that allow for
dilution of samples in the range of 1:10-1:50, so that clinical and subclinical levels of elements fall within the working range (e.g., for zinc, normal range in plasma or serum: 0.5-1.6 mg/L).
3.1.3. The System shall allow for the high precision determination of multiple minerals of interest in nutrition, micronutrient, macronutrient (Mg, Ca, Na)
as well as contaminant at low ppb level (Pb, As, Cd), with an operating cost that is affordable for national monitoring and surveillance programs, in which a representative number of samples is required with low budget available.

3.2.Technical Requirements

The System shall meet the following technical requirements:
3.2.1. uses magnetic field produced by magnetron to couple the microwave energy into a nitrogen plasma for atomization of pre-digested liquid samples.
3.2.2. The detection of emitted light is performed by a charge coupled device
(CCD) detector;
3.2.3. includes 6-10 kVA online UPS, similar to Kehua KR-J series;
3.2.4. includes computer, printer and software (MP expert);
3.2.5. includes air compressor and nitrogen generator (Agilent 4107 or Genius NM32LA, Peak Scientific);
3.2.6. includes auto sampler system (Agilent SPS3) with racks and tubes;
3.2.7. includes the Multimode Sample Introduction System (MSIS) with the 5-channel peristaltic pump option, to allow detection of low ppb levels;
3.2.8. includes external Gas Control Module (EGCM) and OneNeb Nebulizer to prevent carbon build up on the injector and to reduce the background
emissions from the plasma, in hard samples with elevated total dissolved solids (as plasma samples);
3.2.9. includes spare parts, such as torch, filters, extra argon (for plasma ignition) and pump tubing for 2 years;
3.2.10. Agilent Part No. 6610030600, Calibration mix 2, 125 mL. Contains 100 mg/L Ag, Al, As, Ba, Be, Cd, Co, Cr, Cu, Mn, Ni, Pb, Se, Tl, Th, U, V and Zn in 5% HNO3;
3.2.11. Agilent Part No. 6610030700 Calibration mix majors, 125 mL. Contains 500 mg/L Ca, Fe, K, Mg and Na in 5% HNO3.