SCHEME SUMMARY

SCHEME SUMMARY
Note: this list is not exhaustive. See us for additional requirements.

SCHEME

DESCRIPTION

PREP-01A

Pulverisation of soil samples <500g

PREP-01

Dry, crush, split, pulverise <3kg

PREP-02

Dry, crush, split, pulverise core/rock <3kg

PREP-03

Dry, pulverise vegetation samples

WAR-25

Aqua-regia digest, 25g: Low-level Au (0.5 ppb DL) by ICP-MS

MAR-04

µwave digest, aqua-regia: 50 elements by ICP-MS/ICPOES

MMA-04

µ-wave digest, HF/multiacid: 61 elements including REEs by ICP-MS/OES

ENV-04

Water samples: 64 elements by ICP-MS

PL-01

Partial leach, chelating CN: 64 elements by ICP-MS/OES

PL-02

Partial leach, Water: 64 elements by ICP-MS/OES

PL-03

Partial leach, Sodium Pyrophosphate: 64 elements by ICP-MS/OES

PL-04

Partial leach, Weak Hydroxylamine (0.1M): 64 elements by ICP-MS/OES

PL-04S

Partial leach, Strong Hydroxylamine (0.25M): 64 elements by ICP-MS/OES

PL-05

Partial leach, Dilute aqua regia (10%): 64 elements by ICP-MS/OES

PL-05S

Partial leach, Conc. aqua regia (100%): 64 elements by ICP-MS/OES

AF-02

Lithium borate fusion: Majors, traces, REEs, by ICP-OES/MS

AF-03

Lithium borate fusion: Majors only (whole rock, inc. LOI) by ICP-OES

LITH-02, LITH-02R

A whole-rock lithogeochem package, with sensitive trace element detection. Combined alkaline fusion plus µwave aqua regia digest, ICP-MS/OES. Majors, traces, REEs, LOI. LITH-02R is research-grade analysis, including CO2 and FeO

MSA-04, MSA-05

Plant tissue analysis (0.5g for 04, 2.0g for 05) for 64 elements by ICP-MS

LABWEST DIGEST CODES AND DETECTION LIMITS            (Download Here)

Analyte

WAR

MAR

MMA

AF

PL

ENV

WCN

MSA

UFF

ppm

ppm

ppm

ppb

ppb

ppb

ppb

ppm

Ag

-

0.01

0.01

-

0.05

0.05

0.1

0.1

0.003

Al

-

10

10

100

10

1

-

2000

10

As

-

0.5

0.5

-

0.5

0.5

2

0.01

0.5

Au

0.5

-

-

-

0.02

0.05

0.01

0.05

0.5ppb

B

-

-

-

-

10

5

-

0.1

-

Ba

-

0.2

0.2

1

10

0.05

-

50

0.2

Be

-

0.05

0.05

1

0.1

0.05

-

0.5

0.01

Bi

-

0.01

0.01

0.1

0.1

0.05

0.1

0.5

0.002

Br

-

-

-

-

1

10

-

10

1

Ca

-

10

10

100

200

50

-

5000

10

Cd

-

0.02

0.05

-

0.05

0.05

0.1

1

0.004

Ce

-

0.05

0.05

0.5

0.1

0.01

-

0.5

0.05

Co

-

0.2

0.2

0.5

0.2

0.02

1

2

0.01

Cr

-

2

1

10

1

1

-

50

2

Cs

-

0.1

0.1

0.1

0.1

0.01

-

0.5

0.03

Cu

-

0.2

0.2

5

0.2

0.1

10

2

0.1

Dy

-

-

0.02

0.05

0.1

0.01

-

0.5

0.02

Er

-

-

0.03

0.05

0.1

0.01

-

0.5

0.05

Eu

-

-

0.02

0.05

0.1

0.01

-

0.2

0.02

Fe

-

100

50

100

1

10

-

5000

50

Ga

-

0.05

0.05

0.1

0.5

0.05

-

1

0.05

Gd

-

-

0.05

0.05

0.1

0.01

-

0.5

0.05

Ge

-

0.05

0.05

-

0.1

0.05

-

5

0.05

Hf

-

0.02

0.02

0.1

0.5

0.02

-

0.5

0.002

Hg

-

0.01

0.05

-

0.1

0.1

-

0.5

0.001

Ho

-

-

0.02

0.05

0.1

0.01

-

0.1

0.02

I

-

-

-

-

1

10

-

10

1

In

-

0.01

0.005

0.1

0.01

0.01

-

0.5

0.001

K

-

10

10

100

20

50

-

5000

10

La

-

0.05

0.05

0.1

0.1

0.01

-

5

0.05

Li

-

0.5

0.5

-

0.2

0.1

-

5

0.05

Lu

-

-

0.02

0.05

0.1

0.01

-

0.1

0.02

Mg

-

10

10

100

10

50

-

10000

10

Mn

-

2

2

10

2

0.05

-

10

0.5

Mo

-

0.1

0.1

1

0.1

0.1

0.1

2

0.03

Na

-

10

10

100

10

50

-

10000

-

Nb

-

0.05

0.5

0.1

0.05

0.01

-

1

0.01

Nd

-

-

0.02

0.1

0.1

0.01

-

1

0.02

Ni

-

0.5

0.5

5

1

0.2

10

20

0.2

P

-

5

5

50

20

20

-

5000

-

Pb

-

0.2

0.2

1

0.2

0.1

-

5

0.05

Pd

-

-

-

-

0.1

0.2

0.1

0.1

-

Pr

-

-

0.05

0.05

0.1

0.01

-

0.5

0.05

Pt

-

0.002

0.005

-

0.05

0.01

0.1

0.02

1 ppb

Rb

-

0.1

0.1

0.2

0.1

0.01

-

5

0.1

Re

-

0.001

0.0005

0.1

0.01

0.01

-

0.01

0.0001

S

-

50

50

-

50

1000

-

20000

5

Sb

-

0.01

0.1

1

0.5

0.05

-

0.5

0.001

Sc

-

1

1

1

1

1

-

1

0.2

Se

-

0.05

0.05

1

2

0.5

-

10

0.05

Si

-

-

-

100

-

100

-

-

-

Sm

-

-

0.02

0.1

0.1

0.01

-

0.5

0.02

Sn

-

0.1

0.2

1

0.05

0.05

-

10

0.02

Sr

-

0.1

0.1

0.1

1

10

-

100

0.1

Ta

-

0.01

0.01

0.1

0.05

0.02

-

0.1

0.001

Tb

-

-

0.02

0.05

0.1

0.01

-

0.5

0.02

Te

-

0.01

0.05

0.1

0.05

0.05

-

0.5

0.001

Th

-

0.02

0.02

0.05

0.02

0.05

-

0.5

0.02

Ti

-

10

10

100

5

10

-

100

2

Tl

-

0.02

0.02

0.5

0.5

0.01

-

0.5

0.003

Tm

-

-

0.01

0.05

0.1

0.01

-

0.1

0.05

U

-

0.02

0.02

0.05

0.05

0.02

-

0.5

0.003

V

-

1

1

5

10

0.01

-

100

1

W

-

0.01

0.1

1

0.1

0.02

-

0.2

0.001

Y

-

0.05

0.05

0.1

0.1

0.01

-

5

0.05

Yb

-

-

0.03

0.05

0.1

0.01

-

0.5

0.05

Zn

-

0.2

0.2

2

0.2

0.5

50

10

0.2

Zr

-

0.5

1

2

0.1

0.02

-

1

0.1

Sample Preparation (PREP)

Our sample preparation is designed to handle low-grade materials without cross-contamination.
Samples are dried, crushed (~2mm) and rotary divided where required. Pulverisation is undertaken by LM1 mill, and bowls are barren-washed after each sample.
Pulverisation in non-ferrous heads is available.

Gold (WAR)

Our low-detection gold technique (WAR) has been developed in-house to offer excellent recovery and signal discrimination in regolith materials, whilst minimising potential for cross contamination.
A 25 or 40g portion of pulverised sample is analysed for gold content using aqua-regia digestion, with determination by ICP-MS to achieve high recovery and low detection limits (0.5ppb).
A range of common pathfinder elements can also be determined by ICP-MS from the WAR leach. This should be considered a partial leach for these additional elements.

Multi-Element Analysis (MAR)

The MAR technique is designed for analysis of regolith materials for gold and base metals exploration.
The sample material is digested in aqua-regia under high pressure and temperature in microwave apparatus, with determination of analytes by ICP-MS/ICP-OES.

Pulverisation in non-ferrous heads is available.

Multi-Element Analysis with Rare-Earths (MMA)

The MMA technique is a microwave-assisted, HF-based digestion that effectively offers total recovery for all but the most refractory of minerals. This technique is well suited to materials such as core, rock-chip and stream sediments.
A portion of sample is digested in an HF-based acid mixture under high pressure and temperature in microwave apparatus for analysis, with determination of 61 elements including Rare-Earths by a combination of ICP-MS and ICP-OES.

Whole Rock Analysis (AF)

Samples are fused in an alkaline salt (lithium meta/tetraborate or sodium peroxide), and dissolved in nitric acid for determination of major rock-forming elements by ICP-OES and resistate traces by ICP-MS. Loss-on-ignition is included, and FeO and CO2 may be analysed by titration.

Partial Leach Analysis (PL)

Leachates are analysed for full multielement suites, including rare-earths, to low detection limit by ICP-MS and ICP-OES.

Examples of leaches performed:

partial_leach_analysis_egs

Bio-Geochemical Analysis (MSA)

Microwave digestion apparatus offers complete sample decomposition under high temperature and pressure, elimination of cross-contamination and retention of volatile analytes.

Excellent detection limits are obtained for biological materials through the use of current-generation ICP-Mass Spectrometry for the determination of 64 analytes.

Whole-Rock Analysis for Researchers

A lithogeochemical characterisation package for research purposes.

Samples are analysed by a combination of alkaline fusion (for high field-strength and resistate elements) and HF/Multiacid microwave digestions followed by determination by ICP-OES and ICP-MS to give full analysis of component metallic elements. Carbon dioxide content is analysed by gas evolution or titration, and LOI is performed gravimetrically. FeO is determined titrimetrically.

Major rock-forming oxides, base metals, traces, volatile pathfinders, and rare-earth elements are reported, along with carbon dioxide and LOI.