10

formula  and
congener  groups

This  expression  describes  the  total  of  all  compounds  in  a  technical
PCA  mixture.  Both  the  length  of  the  carbon  chain  as  well  as  the
number  of  chlorine  atoms  can  vary  (see  also  congener).

FS

Research  vessel  (Forschungsschiff)

GA

Research  vessel  GAUSS

Gadumor

Gadua  morhua,  cod

GC

Gas  Chromatography

GPC

Gel  Permeation  Chromatography

HCB

Hexachlorobenzene

HCH

Hexachlorocyclohexane

HELCOM

Helsinki  Commission

HFBAA

Heptafluorobutyric  acid  anhydrate

HPLC

High  Performance  Liquid  Chromatography

HRGC

High  Resolution  Gas  Chromatography:  Separation  with  capllary
columns.

HRMS

High  Resolution  Mass  Spectrometry:  Mass  separation  is  carried
out  in  a  magnet  field  at  mass  resolutions  of  5’000-10’000.  This
increased  selectivity  and  suppresses  disturbances  by  sample  matrix
and  other  organic  pollutants.

ID

Internal  Diameter

ISTD

Internal  Standard

Kow

Octanol/water  distribution  coefficient

LC

Liquid  Chromatography

LC50

Lethal  concentration  by  which  50%  of  the  test  organisms  die

LD50

Lethal  dose,  by  which  50%  of  the  test  organisms  die

Lima  lim

Limanda  limanda,  dab

LOD

Limit  of  Detection  (normally  at  a  signal-to-noise  ratio  of  3:1):  The
height  of  a  chromatographic  signal  must  be  three  times  higher  than
the  chemical  and  electronic  noise  of  the  baseline.

LOQ

Limit  of  Quantification  (normally  at  a  signal-to-noise  ratio  of
10:1):  The  height  of  a  chromatographic  signal  must  be  ten  times
higher  than  the  chemical  and  electronic  noise  of  the  baseline.

1PCA

long-chain  polychlorinated  n-alkancs

LRMS

Low  Resolution  Mass  Spectrometry:  All  mass  spectrometric
techniques  with  so-called  unit  mass  resolution.  This  means  that
ions  with  a  mass  difference  of  one  mass  unit  can  be  separated.