Indian Council of Agricultural Research
(Agricultural Knowledge Management Information System)


ICAR-Indian Institute of Soybean Research, Near IT Park, Khandwa Road, Indore-452001, Madhya Pradesh (www.nrcsoya.nic.in)(www.dsrindore.org)
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Instrument Details
Instrument/Facility Name: Atomic Absorption spectrometer (AAS)
Make                                   : GBC Scientific equipment private Limited, Victoria, Australia
Model                                  : GBC SavantAA series ( Year of Purchase: 2009)
Specification   :Measuring mode: Flame Absorption and Emission with Hydride vapors generation Optics: Double beam, high quality monochromator with 1800 lines/mm holographic grating, 185 to 900nm and/or above wavelength range. AAS should have high quality detector(s). Bandwidth: less than 2 Automatic wave length selection and peaking Background correction: Deuterium lamp Lamp Turret: 8 (Eight) lamp turrets, independent regulated lamp power supply for each lamp for increasing longevity of lamps, with automatic through PC. Gas control: Automatic gas control, with auto ignition. Safety interlocks: Automatic safety interlocks, automatic shutdown in any emergency, safety interlock for burner, gases, flame, drainage. Sensitivity: >0.7 Abs for 5 ppm aqueous solution of copper solution. Auto Slit: Automatic slit setting with element selection through PC system Burner Assembly: Titanium burner for air acetylene, N2O, N. Hollow Cathode Lamps: Coded lamps Zinc (Zn), Copper (Cu), Iron (Fe), Manganese (Mn), Essential items present Oil free

Click to ViewAtomic absorption spectroscopy (AAS) is a spectroanalytical procedure for the quantitative determination of chemical elements using the absorption of optical radiation (light) by free atoms in the gaseous state. In analytical chemistry the technique is used for determining the concentration of a particular element (the analyte) in a sample to be analyzed.

  Working Principles
Click to ViewThe technique makes use of absorption spectrometry to assess the concentration of an analyte in a sample. It requires standards with known analyte content to establish the relation between the measured absorbance and the analyte concentration and relies therefore on the Beer-Lambert Law. In short, the electrons of the atoms in the atomizer can be promoted to higher orbitals (excited state) for a short period of time (nanoseconds) by absorbing a defined quantity of energy (radiation of a given wavelength). This amount of energy, i.e., wavelength, is specific to a particular electron transition in a particular element. In general, each wavelength corresponds to only one element, and the width of an absorption line is only of the order of a few picometers (pm), which gives the technique its elemental selectivity. The radiation flux without a sample and with a sample in the atomizer is measured using a detector, and the ratio between the two values (the absorbance) is converted to analyte concentration or mass using the Beer-Lambert Law.

  Applications
  User Instructions
Micronutrient (Zinc, iron, manganese and copper) in soils and plant samples1. For soil samples analysis , chemicals such as Diethylene triamine penta acetic acid(DTPA0, triethanol amine and calcium chloride is required 2. For plant sample analysis, nitric acid and perchloric acid is required

  Contact Us
Contact No. 0731-2437975(O)
Email Id aketi_ram@rediffmail.com

  Atomic Absorption spectrometer (AAS) Charges
Procedure Name
Industry
University
National LAB/R&D
Remark

Additional Rs 100/-towards postal charges if result are to be posted
The Demand Draft should be in favour of ""
Letter, DD & Samples send to ""