X-ray fluorescence spectroscopy XRF (Panalytical AXIOS^max)

Analyses of major and trace elements in sediments, rocks, and soils in the form of fused glass beads

Responsibility: Dr. Philipp Böning, Eleonore Gründken

Measured parameters: Si, Al, Ti, Fe, Mn, Mg, Ca, Na, K, P, As, Ba, Co, Cr, Cu, Ga, Ni, Mo, Pb, Rb, Sr, Th, U, V, Y, Zn, Zr (Ce, Cl, S, Nb upon request).

Sample matrix: Ground powder (sediments, soils, rocks)

Sample preservation: pressed powder pellets or fused glass beads

Sample storage: dry, room temperature

Sample volume: 1-2 g

Measured range: mg/kg – wt.-%

Inductively coupled plasma mass spectrometry with triple quadrupole (Thermo Scientific iCAP TQ ICP-MS)

Analyses of trace elements in

(i) sediments, rocks, and soils in an aqueous matrix (acid digested)

(ii) pore-, sea-, and fresh water (10-20 fold dilution for salt matrix)

(iii) seawater after  matrix removal

Responsibility: Dr. Philipp Böning, Eleonore Gründken

Measured parameters:

(i): Ag, Ba, Bi, Cd, Co, Cr, Cs, Cu, Ni, Mn, Mo, Pb, Rb, Re, Sr, Tl, U, V, Y, Zn, Zr and rare earth elements (La-Lu) 

(ii): Ba, Fe, Mn, Mo, Tl, V, U, Co, Cu, Re (Al, P, Cd, Cr, Li, Ni, Pb, Sr, Y, Zn upon request) 

(iii): Rare Earth Elements (Y, La-Lu) after matrix removal (seawater)

Sample matrix: aqueous (acid-digested sediments, soils, rocks; sea-, fresh-, porewater)

Sample preservation: Filtration (0.2-0.45 µm, cellulose acetate, PES, PTFE), acidification (2 % HNO₃, v/v)

Sample storage: room temperature or cool (4°C)

Sample volume: 1-10 mL

Measured range: ng/L – µg/L

Inductively coupled plasma atomic emission spectroscopy, ICP-OES (Thermo Scientific iCAP PRO Serie)

Analysis of major and trace elements in

(i) sediments, rocks, and soils (acid digestions)

(ii) pore-, sea-, and fresh water

Responsibility: Eleonore Gründken, Dr. Philipp Böning

Measured parameters:

(i): Al, Ti, Fe, Mn, Mg, Na, Ca, K, P, S, As, Ba, Cd, Co, Cr, Cu, Li, Ni, Mo, Pb, Sr, V, Y, Zn, Zr

(ii): Si, Al, Fe, Ba, Mn, Mg, Na, Ca, K, P, S (As, Cd, Co, Cr, Cu, Li, Ni, Mo, Pb, Sr, Ti, V, Y, Zn upon request) 

Sample matrix: aqueous (acid-digested sediments, soils, rocks; sea-, fresh-, porewater)

Sample preservation: Filtration (0.2-0.45 µm, cellulose acetate, PES, PTFE), acidification (2 % HNO₃, v/v)

Sample storage: room temperature or cool (4°C)

Sample volume: 2-10 mL

Measured range: µg/L – mg/L

Atomic absorption spectrometry (Thermo Scientific iCE 3300)

The AAS primarily serves as a teaching device for the BSc/MSc programs Chemistry and Environmental Analytics. When not used for teaching, the instrument is available to measure ppm-level K, Cu and Fe in freshwater samples and acid-digested sediments.

Responsibility: Dr. Philipp Böning, Eleonore Gründken

Measured parameters: K, Cu Fe (Single element channels)

Sample matrix: aqueous (acid-digested sediments and freshwater samples)

Sample preservation: Filtration (0.2-0.45 µm, cellulose acetate, PES, PTFE), acidification (2 % HNO₃, v/v)

Sample storage: room temperature or cool (4°C)

Sample volume: 1-10 mL

Measured range: low mg/L

Carbon/Sulfur (C-S) Analyzer with TIC Unit (Eltra CS580)

Responsibility: Eleonore Gründken, Kerstin Adolph

Measured parameters: Total carbon (TC), total sulfur (TS), inorganic carbon (TIC)

Sample matrix: Solid phase (powder, sediment, filter retentate)

Sample preservation: Drying

Sample storage: room temperature

Sample volume: 1-5 g

Measured range: 0.05 - 100 wt.-% (TC), 0.05 - 5 wt.-% (TS)