Analytical methods

Below you can find the element speciation that we can offer at ALS Scandinavia AB. If you are unable to find what you are looking, please do not hesitate to contact us. Through our comprehensive network we may be able to find the right solution for you.

 

Arsenic speciation analysis

There are several sources to the toxic, inorganic arsenic compounds. Due to the toxicity of arsenic, particularly to fungi and bacteria, chromated copper arsenate has been widely used as wood preservative. By now, a ban has been introduced in the EU and U.S but there are still numerous industrial areas contaminated by arsenate. Read more about arsenic speciation here.

Compounds offered:

 

 

As (total arsenic)
As(III) (arsenite)
As(V) (arsenate)
DMA (dimethylarsinate)
MMA (monomethylarsonate)

Typical sample types (minimum sample amount):

Water (1 mL)
Soil (1 g)
Sediment (1 g)
Sludge (1 g)
Biota (0.5 g)

Food (0.5 g)
Urine (1 mL)

Analytical technique(s): LC-HG-ICPMS

Methylmercury analysis

The main anthropogenic source of methylmercury (MeHg) pollution today is the burning of waste containing inorganic mercury. In addition to this, methylmercury is also generated when burning fossil fuels. Methylmercury is converted from inorganic mercury and this process (methylation) occurs in lakes, rivers, sea etc. Methylmercury is biomagnified in aquatic food chains meaning the concentration rises for each step in the food chain. As a consequence of this, certain animals like fish may have MeHg concentrations well over the ones in its’ surrounding environment. Read more about methylmercury here.

 

Compounds offered: Hg (total mercury)
MeHg (methylmercury)
Typical sample types (minimum sample amount)

Water (100 mL)
Soil (1 g)
Sediment (1 g)
Sludge (1 g)
Biota (2 g)
Blood (2 mL)
Serum (2 mL)

Analytical technique(s): GC-ICP-SFMS

Selenium speciation analysis

While Selenium is an essential trace element for, selenites and selenates are highly toxic.

 
Compounds offered:

 

 

Se (total selenium) 
Se(IV) (selenite)
Se(VI) (selenate) 

Typical sample types (minimum sample amount): 

Water (1 mL)
Soil (1 g) 
Sediment (1 g) 
Sludge (1 g) 
Biota (0.5 g) 

Analytical technique(s):  LC-HG-ICPMS 
 

Organotin compounds analysis

The use of organotin compounds is widely spread. The most commonly known source of the toxic tributyltin (TBT) is from its’ use as antifungal agent. It has been used in textiles, paper, wood and marine paint used on boats. The use of TBT paint on boats and ships caused has caused damage to marine life in our harbors. Due to the toxicity of triorganotin compounds, they are now banned in large parts of the world.

 

Compounds offered:

 

 

Sn (total tin)
MBT (monobutyltin)
DBT (dibutyltin)
TBT (tributyltin)
TTBT (tetrabutyltin)
MOT (monooctyltin)
DOT (dioctyltin)
TCHT (tricyclohexyltin)
MPhT (monophenyltin)
DPhT (diphenyltin)
TPhT (triphenyltin)

Typical sample types (minimum sample amount):

 

Water (250 mL)
Soil (2 g dry matter)
Sediment (2 g dry matter)
Sludge (2 g dry matter)
Biota (2 g dry matter)
Food and feed

Analytical technique(s):

GC-ICP-SFMS

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