Determination of mineral and trace element concentrations in pine needles by ICP-OES: evaluation of different sample pre-treatment methods

Väisänen, Ari; Laatikainen, Paula; Ilander, Aki; Renvall, Sanna

doi:10.1080/03067310802308483

Cited by 21 publications

(6 citation statements)

References 42 publications

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“…The digestate and feedstock samples for the trace element analysis (III) were first dried (24 h, 105 °C), milled in a rotor mill (Pulverisette 14, Fritsch, Germany) and stored at 22 °C until analysed. The concentration of the trace elements was measured using a Perkin-Elmer (Norwalk, CT, USA) Optima 4300 DV ICP-OES using the following default parameters of the instrument: nebulizer flow 0.5-1.0 l min -1 , auxiliary gas flow 0.2 l min -1 , plasma gas flow 15 l min -1 and plasma power of 1300 or 1400 W (Väisänen et al 2008). …”

Section: Post-methanation Assays (Iii Iv)mentioning

confidence: 99%

Screening of novel plants for biogas production in northern conditions

Seppälä

Laine

Rintala

2013

Bioresource Technology

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Esitetään Jyväskylän yliopiston matemaattis-luonnontieteellisen tiedekunnan suostumuksella julkisesti tarkastettavaksi yliopiston Ylistönrinteellä salissa YAA303 syyskuun 27. päivänä 2013 kello 12.Academic dissertation to be publicly discussed, In this thesis, the methane production potential of traditional and novel energy crops was evaluated in boreal conditions. The highest methane yield per hectare was achieved with maize (4 000-9 200 m 3 CH4 ha -1 a -1 ) and the second highest with brown knapweed (2 700-6 100 m 3 CH4 ha -1 a -1 ). Recently, the most feasible energy crop, grass, produced 1 200-3 600 m 3 CH4 ha -1 a -1 . The specific methane yields of traditional and novel energy crops varied from 170-500 l kg -1 volatile solid (VS). The highest specific methane yields were obtained with maize, while the novel energy crops were at a lower range. The specific methane yields decreased in the later harvest time with maize and brown knapweed, and the specific methane yield of the grasses decreased from the 1 st to 2 nd harvests. Maize and brown knapweed produced the highest total solid (TS) yields per hectare 13-23 tTS ha -1 , which were high when compared with the TS yields of grasses (6-13 tTS ha -1 ). The feasibility of maize and brown knapweed in co-digestion with liquid cow manure, in continuously stirred tank reactors (CSTR), was evaluated. According to the CSTR runs, maize and brown knapweed are suitable feeds and have stable processes, producing the highest methane yields (organic loading rate 2 kgVS m -3 d -1 ), with maize at 259 l kgVS -1 and brown knapweed at 254 l kgVS -1 . The energy balance (input/output) of the cultivation of the grasses, maize and brown knapweed was calculated in boreal conditions, and it was better when the digestate was used as a fertilizer (1.8-4.8 %) than using chemical fertilizers (3.7-16.2 %), whose production is the most energy demanding process in cultivation. In conclusion, the methane production of maize, grasses and novel energy crops can produce high methane yields and are suitable feeds for anaerobic digestion. The cultivation managements of maize and novel energy crops for biogas production require further research.

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Section: Post-methanation Assays (Iii Iv)mentioning

confidence: 99%

Screening of novel plants for biogas production in northern conditions

Seppälä

Laine

Rintala

2013

Bioresource Technology

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“…Subsamples of freshly collected leaves and leached preconditioned leaves were lyophilised, ground to fine powder in a ball mill and analysed for contents of total carbon and nitrogen (Elementar vario EL C/N elemental analyser, Hanau, Germany), fibrous compounds (gravimetric determination of acid detergent lignin and cellulose, Gessner et al ., ), and phenols (detection with a spectrophotometer following extraction with 70% acetone and addition of Folin‐Cialteau reagent, Bärlocher & Graça, ). Furthermore, concentrations of Ca, Mg, K and P were determined by ignition (4 h at 450 °C) followed by extraction with 10 mL of aqua regia:ultrapure water (1:1) solution in an ultrasonic bath (Väisänen et al ., ) and detection with an ICP‐OE spectrometer (Thermo Scientific, iCAP 6500, USA, wavelengths: Ca 318.1 nm axial, K 766.4 nm axial; Mg 285.2 nm axial, P 214.9 nm radial).…”

Section: Methodsmentioning

confidence: 99%

Preconditioning of leaves by solar radiation and anoxia affects microbial colonisation and rate of leaf mass loss in an intermittent stream

et al. 2013

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Summary Seasonal flow intermittence in streams often coincides with early leaf abscission of riparian vegetation due to water stress. When accumulated on dry stream beds or in remaining pools, leaves are exposed to solar radiation or fermentation processes, respectively. However, very little information exists on how these preconditioning processes could affect leaf decomposition when stream flow has recovered. We simulated natural preconditioning of leaves by irradiation with UV‐VIS fluorescent lamps and incubation under anoxic conditions. Mass loss rates of preconditioned leaf litter from deciduous trees (Alnus glutinosa, Fraxinus excelsior, Populus tremula and Quercus petreae) were quantified in a temporary stream during base flow conditions. Coarse and fine mesh litter bags were used to study the effect of benthic macroinvertebrates and microorganisms on leaf mass loss. Preconditioning reduced the concentration of macronutrients such as P, K and Mg and increased the relative cellulose content of the leaves. Preconditioning changed the fungal community structure (analysed by DGGE) depending on leaf species and sampling date. Preconditioning in anoxic conditions also suppressed fungal decomposer biomass (measured as ergosterol) by 42% resulting in 33% lower mass loss rates in fine mesh bags. In contrast, mass loss rates were not affected by preconditioning when macroinvertebrate decomposers had access to the leaf litter. In streams exhibiting seasonal flow intermittence, preconditioning will influence organic carbon dynamics towards lower rates of microbially mediated turnover and towards poorer quality of downstream‐transported material.

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“…Thus the analytical methods applied will be described more detailed here. Since the early 1980s the underlying general methods have been proven to be suitable for various plant matrixes (e.g., Vaisanen et al 2008).…”

Section: Chemical Leaf Analysismentioning

confidence: 99%

EFFECTS OF DIFFERENT SOIL AMELIORANTS ON KAREE TREES (SEARSIA LANCEA) GROWING ON MINE TAILINGS DUMP SOIL—PART I: POT TRIALS

Lange

Kotte

Smit

et al. 2012

International Journal of Phytoremediation

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Rehabilitation of mine tailings dams is often a challenge due to a lack of nutrients and a poor humus reservoir prevailing in tailings soils. This is especially true for establishing longer lived species such as trees. For these reasons the effects of different soil ameliorants (woodchips compost, vermicompost, mature sewage sludge), added to the root system of Karee (Searsia lancea) saplings were tested in pot trials. Those pots were filled with platinum and gold tailings substrate as well as red clay soil, respectively. For three months plants remained in a greenhouse and were subsequently moved to a test field outside. Throughout the test period regular chl a fluorescence measurements were taken and subjected to JIP-test quantifying changes in photosynthetic vitality status. Additionally, growth measurements and one-off leaf analysis were carried out. Test plants growing on mine tailings experienced an up to 35% higher average photosynthetic vitality (PI(ABS)) and improved nutrient supply, when treated with mature sewage sludge. Consequently, sewage sludge treated plants showed a higher biomass build-up rate and an up to 55% higher diameter growth, compared to control. In summary the experiments present a low cost alternative for reforestation enterprises on platinum and gold tailings dams in South Africa.

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Determination of mineral and trace element concentrations in pine needles by ICP-OES: evaluation of different sample pre-treatment methods

Cited by 21 publications

References 42 publications

Screening of novel plants for biogas production in northern conditions

Screening of novel plants for biogas production in northern conditions

Preconditioning of leaves by solar radiation and anoxia affects microbial colonisation and rate of leaf mass loss in an intermittent stream

EFFECTS OF DIFFERENT SOIL AMELIORANTS ON KAREE TREES (SEARSIA LANCEA) GROWING ON MINE TAILINGS DUMP SOIL—PART I: POT TRIALS

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