Soil analyzer RA-915M

airwaterurine

Product overview
RA-915M is a supersensitive, highly selective portable analyzer for real-time mercury measurement in ambient and indoor air. With dedicated attachments, it performs mercury determination in solids, liquids, biological materials and hydrocarbon gases, for both field and laboratory use.

Applications
Background air monitoring, mobile and stationary mercury surveys, indoor/outdoor pollution detection and mapping, demercurization control, occupational health and safety, and geochemical exploration.

Matrix — Limit of detection (LOD)
Gaseous samples:
Ambient air (direct analysis) — 0.5 ng/m3
Natural gas — 1 ng/m3

Solid and liquid samples (thermal decomposition attachment):
Soils, rocks, sediments — 0.5 ppb (µg/kg)
Water and solutions — 1 ppb (µg/L)
Foodstuff — 0.5 ppb (µg/kg)
Biological samples (tissues, blood, hair, etc.) — 0.5 ppb (µg/kg)
Crude oil, gas condensate — 1 ppb (µg/kg)
Naphtha — direct — 1 ppb (µg/kg); preconcentration — 0.05 ppb (µg/kg)
Coal — 1 ppb (µg/kg)
Sorbent traps for stack gases — 0.5 ng (range 0.5 - 50,000 ng)

Solid and liquid samples (cold vapor CV attachment):
Water and solutions — 0.1 ppt (ng/L)
Foodstuff — 0.1 ppb (µg/kg)
Biological samples — 0.1 ppb (µg/kg)
Urine — 0.1 ppb (µg/L)

Principle of operation
Differential Zeeman atomic absorption spectrometry with high-frequency modulation of light polarization (ZAAS-HFM).

Features and benefits

• Direct continuous measurement without gold traps or compressed gases
• Ultra-low detection limit and high selectivity
• Real-time mode for air and gases with 1 s response time
• Attachments for direct mercury determination in liquids, solids and hydrocarbon gases
• Wide dynamic range (six orders of magnitude)
• Auto zero drift correction
• Self-diagnostic with built-in test cell
• Controlled via keypad or PC (USB)
• Data logger for 122 hours of acquisition, averaging and storage
• Rechargeable battery for up to 8 hours operation

Options

• PYRO-915+ attachment — thermal decomposition for liquid and solid samples (thermoscanning option)
• RP-92 attachment — cold vapor technique for liquids and solids (acid digestion and chemical reduction)
• RP-91NG attachment — direct analysis of hydrocarbon gases

Warranty
RA-915M analyzer and attachments are covered by a full 1-year warranty.

Delivery set
Supplied with RAPID software, charger, shoulder bag, air intake hose, spare filters, interface cable and manuals. Attachments available separately.

Services
Installation, commissioning, technical support and operator training provided by qualified application specialists.

Technical specifications

• Measurement principle: Atomic absorption spectrometry at 254 nm with Zeeman background correction
• Detection limit: 0.5 ng/m3
• Measurement ranges: 0–20 000 ng/m3; 0–2 000 000 ng/m3
• Analysis time: Direct real-time; 1 s response
• Data logger: 122 hours
• Battery: up to 8 hours
• Power supply: Built-in battery (up to 8 h); external 100–240 VAC, 50/60 Hz
• Power consumption: Max. 35 W
• Dimensions: 470x110x220 mm
• Weight: 7 kg