Analysis Method

Atomic

Absorption

Lamp

Mode

HCL mode: AA analysis without

background correction.

BGC-SR mode: Background correction.

by Self Reversal

BGC-D ₂ mode: Background correction.

by D ₂ lamp

D ₂ mode: Measures molecular

absorption, scattering, etc.

Emission mode: Flame emissionanalysis of elements

Flame,

Microsampling

flame Furnace

Molecular

absorption

Flame

emission

Flame only

Wavelength range

190 ~ 900nm

Background

correction

Self reversal and Deuterium lamp (high-Speed, dual-frequency

simultaneous measurement)

HC

lamp

Current

Low level: 0 ~ 60mA

High level: 0 ~ 600mA (used with BGC-SR)

Two-level pulse lighting

Frequency

BGC-SR: 100Hz Hollow Cathode Lamp/D ₂ mode: 500Hz

No. of lamps

8-lamp turret

2 lamps simultanously lit (1 for measurement; 1 warming up for next

measurement in multielement, sequential analysis)

D ₂

lamp

Type

Hot cathode type

Lighting

System

Pulsed lighting

Frequency

1000Hz

Current

250mA

Beam balance

Automatic 2-step gain adjustment

Mounting

Aberration-corrected Czerny-Turner mounting

Bandwidth

0.1, 0.2, 0.5, 1.0, 2.0, 5.Onm (6-step automatic switching)

Wavelength setting

Linked with slit, automatic setting by peak search using Precision Direct

Scan Drive (PDSD)

Detector

Photomultiplier R787-04

Power requirements

100, 120, 220VAC switching, 600VA, 50/60Hz

Dimensions, weight

W1080 x D545 x H470, 100kg (including the gas control System)

Mode

Calibration curve (10 points. max, including blank) - selectable among 1st, 2 ^nd , 3 ^rd order function.

Shift through origin capability. Standard addition method (10pt. Max, 1 ^st order function.

Accuracy

enhancement

Determination of calibration curve by least square method

Value averaging based on repeat measurement (up to 10 repetitions)

Automatic exclusion of deviant values, additional Tuns, and recalculation

Calibration curve

recording

Automatic recording

Peak signal processing

Transient Signals in furnace/microsampling flame analysis

Repeat analysis

Max. 10 repetitions Mean value and Coefficent of variance (C. V.) displayed.

Automatic exclusion of deviant values based on number of data, maximum number of repetitions and C. V.

Baseline correction

Automatic drift correction using electrical double beam signal processing in Peak Height and Peak Area mode.

Calibration curve

drift correction

The calibration curve equation may be corrected for drift by measuring standards interdispersed among the samples. The data stored in the memory are automatically corrected. The corrected calibration curve is applied in subsequent analysis.

Sample concentration calculation

Determined by External Standard or Standard Addition methods. Sample weight and dilution factors are automatically calculated.

Data processing

Weights, volumes, dilution factors, and correction factors can be used to calculate concentration of initial Sample. Data processing table may be customized.

Data Recording

Printer

Thermal-8 dots/mm (head resolution), 20 dots/mm (paper feed direction

resolution). Optional color plotter available.

Chart paper

Roll-type thermal paper, 210mm wide and 30m long

Data printout

Sample number, Replicate number, Peak height, Area count, Background

height, C. V. value. Analysis conditions, Calibration curve, Absorbance

curve. Sample concentration calculation tables, Table of data processing

results, Furnace heating program (graphic display), and Hard copy of

screen display.

Absorbance

plot

Full scale Response

Chart feed

Absorbance, –9.9999 to +9.9999

4-step changeover, bar graph display, peak signal

(transient signals are recorded in the case of Furnace/

Microsampling flame analysis)

1.25, 2.5, 5, 10, 15, 20, 25, 30mm/sec

Flame-continuous

Aspiration method

Pre-spray time: 1 to 99 sec, Integration time: 1 to 99 sec.

Selectable pre-spray may be set before each replicate and/or before each sample.

Furnace/

Microsampling flame

Peak height, Peak area (Transient signal height, area display)

High resolution 14 inch color CRT (640 dots x 400 lines). Each item is displayed in user specified color.

Displayed items (in addition to data printout);

- Transient signal zoom display

- Help messages

- Autosampler syringe/sample nozzle position i nformation

- System setting

Burner

Type

Air-cooled pre-mix type with 10cm slot (5cm slot for high temperature

flame optional)

Burner head

Stainless steel (titanium optional)

Nebulizer

Pt-Ir capillary with Teflon orifice

Impact beads

Glass (Teflon-coated optional)

Chamber

Polypropylene

Flame

Automatic ignition/extinction

Positionin

* Vertical, horizontal, and angular positioning

*Vertical and horizontal positioning via keyboard. Automatic Optimum

  positioning for each element.

* Automatic positioning on the optical axis in flame analysis

Gas Control

Flow rate/

pressure

control

* Pressure/flow rate control, automatic flow setting

* Fine adjustment of fuel gas flow rate possible from keyboard (O.1L/min. steps)

* Automatic optimization of gas conditions for each element

Safety

measures

* Automatic gas leck check when turning on the power

  (10min check: cannot be cancelled)

* Air-C ₂ H ₂ flame priority ignition

* Air/N ₂ 0 automatic changeover with flow rate monitor using optical sensor

* Flashback prevention with optical sensor monitor

* Automatic flame extinction when power failure occurs

* Prevents usage of wrong burner head

* Drain tank water level monitor to prevent flashback

Floppy disk drive

Two 3.5 inch foppt" disk drives, 1MB/disk (when formatted)

Auto-program functions

Automatic analysis functions based on program of linked manual operations.

Self-diagnostic functions

Spectrometer wavelength error automatic seit diagnosis during D ₂ lamp

use.

Automatic seif diagnosis of autosampler nozzle position (vial, rinse port,

mixing port positions)

Heating temperature

range

Ambient to 3000°

Heating control system

Drying: Current control

Ashing, atomizing: Temperature control

Temperature program

Stored on floppy disks together wich Main Unit AA Parameters.

Number of programs unlimited.

Heating stage

20 steps

Heating conditions

1) Temperature: Ambient to 3000°C

2) Time:             0 to 1000 sec

3) Mode:            RAMP/STEP

4) Inner gas:       Types--2 live switching

                         NORMAL (Ar)

                         ALTERNATE (Dry air, N ₂ , etc)

                         Flow rate—Variable in each stage

                            0 to 1.5L/min, 0,1L/min, steps

                         Higher sensitivity is selectable in atomization stage.

                         Pressure: 2.5 to 3.5kgf/cm ²

5) Outer gas:      Flow rate--Fixed

                         1.5L/min

                         Pressure: 2.5 to 3.5kgf/cm ²

Heating parameter

settings

Performed on the AA Main Unit.

The following parameters may be set for each stage.

      1) Temperature (°C)

      2) Time (sec) - - Total for all stages is 2000 sec (max)

      3) Gas type (NORMAUALTERNATE)

      4) Higher sensitivity switch for innen gas control

      5) Inner gas flow rate

      6) Heating mode (RAMP, STEP)

      7) Data sampling (ON/OFF)

Temperature program

display

On AA Main Unit monitor

      1) Table formal

      2) Graph display

      3) Program Status (countdown of remaining time)

Temperature

adjustment (Drying)

1) Automatically alter each heating cycle.

2) Manually via keyboard at any time.

Analyte accumulation

for ultralow level

analysis (Furnace)

1 to 10 timen

Safety features

1) Cooling water pressure monitor

2) Gas pressure monitor

3) Over-current prevention mechanism

4) Furnace block Cooling check

Graphite tube

1) High-density tube

2) Pyrolytic tube

Sample injection volume - - 50µL- (max) in 1µL increments

Gas consumption

3.0 L/min Argon (max)

Cooling water

1.0 L/min

Power consumption

6kW (max) (1ØAC, 200, 220, 230, or 240V, 50/60Hz)

Type

2 syringe type autosampler

Control

RS-232C communication from AA Main Unit

Functions

1) Automatic rinse

2) Self diagnosis

3) Random access (all vial positions)

Vial positions

8 reagents (standards/modifiers)

60 samples

Multielement

sequential analysis

12 groups/elements maximum

Power requirements

100, 120, 220, 240VAC (switch incorporated) 50/60Hz

Dimensions

Controller 154W x 423D x 264H (mm)

Turntable   344W x 292D x 363H (mm)

Vials

Reagent vial 60mL (30mm dia. X 105mm)

Sample vial 19mL (16.5mm dia. X 105mm)

Solvent vessel

1 L capacity

,

1) Standard preparation

2) Dilution

3) Matrix modification

Vials

Syringe

Reagent vials 10mL beaker (30mm dia. x 40mm)

Sample vials 2mL cup

Syringe 1: 250µL

Syringe 2: 2500µL

Sample volume

2µL to 200µL (0.5% RSD for 10µL volume)*

Carryover

Rinse port <10 ^-5

Mixing port < 10 ^-5

Rinsing

Sample nozzle

Mixing port

Injection port

Solvent vessel

2L bottle

Mixing

0 Volume--0.6mL maximum

0 Number of reagents - - 4 in addition to the Standard for Calibratior

and the Standard Addition Method.

Automatic dilution/re-analysis of over ranged Samples - - Sample is

diluted and dilution factor calculated.