Item Description: Direct Mercury Analyzer Double Beam Analyzer directly measures mercury content in samples by using a double beam spectrophotometer to detect the mercury vapor after it has undergone a series of processes including sample drying, thermal decomposition, amalgamation onto a gold trap, and desorption and vaporization for analysis, all within a single integrated system, allowing for rapid and accurate mercury quantification without extensive sample preparation. Requirements: 1. Optical System: Wavelength: 254 nm; Interference filter: 9 nm resolution; Dectector: Three UV-enhanced photodiodes; Spectrophotometer: Double beam, sequential flowthrough with three measurement cells. 2. Analyzes solid, liquid, and gas samples. 3. Analytical Performance: Detection Limit ≤ 0.0003 ng Hg; Ultra Trace Range = .1 ppb-100 ppb Hg; Working Range: 0.001/0.003 ng to 1500/2500 ng Hg; Typical Precision: ≤ 1% at 1 ng Hg; Calibration: Using standard reference materials or standard solutions. 4. Sample Handling: Sample Introduction: Automated, via built-in 40-position auto sampler accommodating both solid and liquid samples; Maximum Solid Sample Weight: 1.5 g; Maximum Liquid Sample Volume: 1.5mL; Sample Treatment: Fully programmable. 5. Carrier Gas: Air or oxygen...
