ICP Instrument for Food Commodity Inspection ICP-AES

Item

Index

Machine technical indicators

Analyze speed

More than 15 elements can be scanned within 60s

                        Scanning range

3600/mm, scanning range:180~500nm,

full band resolution<0.007nm.

2400/mm scanning range 180~900nm,

full band resolution≤0.008nm.

The mode: Sinusoidal rod.

Control by computer, minimum scanning step:0.0003nm

 Wavelength indication error and repeatability

Wavelength indication:≤± 0.02nm      repeatability≤ 0.003nm

Correlation coefficient

 ≥0.9998%

 Precision

RSD≤1.5%

Stability

RSD≤2.0%

Measuring range

Ultra trace to constant

Low detection limit

ppb(ug/L)level

Analysis of many elements

Can analyze 70 metal element and part of non-metallic elements(such as B, P, Si, Se, Te)

 Measurement method

Element order measurement

 Power

 750W—1600W automatic control

RF generator

Working frequency

40.68MHz

Frequency stability

≤0.1%

Output power

750—1600W

Output power stability

≤0.1%

Injection device

Output work coil

Inside diameter: 25mm, 3 turns

Torch tube

Three concentric type, outer diameter:20mm

Coaxial sprayer outside diameter

6mm

Binocular fog chamber diameter

34mm

Monochromator

Light path

Czerny-Turner type

Focal length

1000mm

Line Dispersion Countdown

0.26nm

Resolution

<0.007nm     Choose 3600 r / mm grating

Scan the wavelength range

3600 line/mm, 180—500nm

2400 line/mm, 180—900nm

Stepper motor drives the smallest step

0.0003nm

Exit, incident slit

20μm,25μm

Reflector specifications

(80×110×16)mm

Lens

φ30,  1:1 imaging

Reflector specifications

Concave

Metering device

Photomultiplier tube negative pressure

0—1000V automatic adjustable,       stability<0.03%

Photomultiplier tube current measurement range

10-4~10-9A

Signal acquisition for the V/F exchange

 1mV correspond 100Hz

Metering method

Single multi-element sequential measurement