Influence of organic carbon sources and isotope exchange processes between water and nitrate on the fractionation of the stable isotopes 15 N/ 14 N and 18 O/ 16 O in dissolved nitrate during microbial denitrification in groundwater:
Gespeichert in:
| 1. Verfasser: | |
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| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
2012
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| Schlagworte: | |
| Online-Zugang: | Volltext https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20121128-1113484-0-8 Inhaltsverzeichnis |
| Beschreibung: | XII, 70, XXXI S. graph. Darst. |
Internformat
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| 245 | 1 | 0 | |a Influence of organic carbon sources and isotope exchange processes between water and nitrate on the fractionation of the stable isotopes 15 N/ 14 N and 18 O/ 16 O in dissolved nitrate during microbial denitrification in groundwater |c Anja A. L. Wunderlich |
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Datensatz im Suchindex
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| adam_text | IMAGE 1
TABLE OF CONTENTS
TABLE OF CONTENTS
ZUSAMMENFASSUNG I
ABSTRACT V
ACKNOWLEDGEMENTS IX
PUBLICATIONS AND CLARIFICATION OF CONTRIBUTION, AUTHORSHIP AND COPYRIGHT
X
TABLE OF CONTENTS XI
1 INTRODUCTION 1
1.1 STABLE ISOTOPES IN AQUATIC BIOGEOCHEMISTRY 1
1.2 THE NITROGEN CYCLE AND NITRATE IN THE GROUNDWATER 6
1.2.1 NITRIFICATION 7
1.2.2 DENITRIFICATION 8
1.2.3 DENITRIFICATION BY NITRITE OXIDIZING BACTERIA 10
1.2.4 DISSIMILATORY NITRATE REDUCTION TO AMMONIUM (DNRA) 10
1.2.5 ANAEROBIC AMMONIA OXIDATION (ANAMMOX) 10
1.2.6 OTHER PROCESSES 11
1.3 STABLE ISOTOPES OF NITROGEN AND OXYGEN IN NITRATE DURING
DISSIMILATORY NITRATE REDUCTION AND NITRIFICATION 12
1.3.1 DISSIMILATORY NITRATE REDUCTION 12
1.3.2 NITRIFICATION 15
1.3.3 EXPLANATORY MODELS FOR THE VARIABILITY IN THE (RELATIVE)
ENRICHMENT OF N AND O IN N0 3 DURING DENITRIFICATION 16
1.3.3.1 INFLUENCE OF THE CARBON SOURCE ON E 15N AND E180 DURING
DENITRIFICATION 16
1.3.3.2 ISOTOPIC EXCHANGE BETWEEN OXYGEN IN NITRATE AND WATER 16
1.4 CURRENT METHODS FOR MEASURING NITRATE STABLE ISOTOPES IN BRIEF 19
1.4.1 ACETONE METHOD 19
1.4.2 DENITRIFIER METHOD 19
1.4.3 CADMIUM/AZIDE METHOD 20
1.4.4 ANION EXCHANGE RESIN METHOD 20
1.5 OBJECTIVES AND METHODOLOGY OF THIS STUDY 22
2 ISOTOPE ENRICHMENT FACTORS OF DENITRIFYING BACTERIA CARRYING THE NAR
ENZYME ARE AFFECTED BY DIFFERENT CARBON SOURCES 24
2.1 INTRODUCTION 24
2.2 EXPERIMENTAL SECTION 25
2.2.1 GENERAL ISOTOPE METHODOLOGY 25
2.2.2 CHEMICALS AND PREPARATION OF LABELED SUBSTANCES 25
2.2.3 ORGANISMS AND GROWTH IN BATCH CULTURES 26
2.2.4 DETERMINATION OF GROWTH PARAMETERS 27
2.2.5 SAMPLING PROCEDURE FOR ISOTOPE ENRICHMENT EXPERIMENTS 28
2.2.6 ISOTOPE ANALYSIS 29
2.2.7 VALIDITY OF THE NITRATE EXTRACTION METHOD 29
2.3 RESULTS AND DISCUSSION 31
XI
HTTP://D-NB.INFO/104253912X
IMAGE 2
TABLE OF CONTENTS
2.3.1 INFLUENCE OF CARBON SOURCES ON ISOTOPE FRACTIONATION 31
2.3.2 ABSENCE OF A REOXIDATION OF NITRITE 36
2.3.3 IMPLICATIONS FOR FIELD STUDIES 38
3 MIXED POPULATIONS OF NITRIFYING AND DENITRIFYING BACTERIA CATALYZE
OXYGEN ISOTOPE EXCHANGE BETWEEN WATER AND DISSOLVED NITRATE UNDER ANOXIC
CONDITIONS 40
3.1 INTRODUCTION 40
3.2 MATERIAL AND METHODS 41
3.2.1 GENERAL ISOTOPE METHODOLOGY 41
3.2.2 EXPERIMENTAL PROCEDURES 41
3.2.2.1 BATCH EXPERIMENT WITH THE PURE CULTURE NITROBACTER VULGARIS 41
3.2.2.2 SEDIMENT INCUBATION EXPERIMENTS 42
3.2.2.2.1 DENITRIFICATION EXPERIMENTS 42
3.2.2.2.2 NITRIFICATION EXPERIMENTS 43
3.2.2.3 SAMPLING PROCEDURE 43
3.2.2.4 ISOTOPE ANALYSIS OF NITRATE AND WATER 44
3.3 RESULTS..: 46
3.3.1 OXYGEN ISOTOPE EXCHANGE BETWEEN WATER AND NITRATE BY A PURE
CULTURE OF NITROBACTER VULGARIS 46
3.3.2 ISOTOPIC SHIFT IN DISSOLVED NITRATE BY OXYGEN EXCHANGE WITH WATER
DURING BACTERIAL NITRATE REDUCTION IN SEDIMENT INCUBATIONS 48
3.3.3 NITRITE OXIDATION POTENTIAL IN SEDIMENT INCUBATIONS 52
3.4 DISCUSSION 53
4 CONCLUSIONS AND OUTLOOK 57
4.1 THE INFLUENCE OF DIFFERENT CARBON SOURCES ON THE STABLE ISOTOPE
FRACTIONATION OF NITRATE DURING MICROBIAL DEMITRIFICATION 57
4.2 MICROBIALLY CATALYZED OXYGEN ISOTOPE EXCHANGE UNDER DENITRIFYING
CONDITIONS 59
4.3 CONCLUSION 62
5 REFERENCES 63
APPENDIX I
SUPPLEMENTARY FIGURE: SCHEMATIC OF GROWTH MEDIUM DISPENSER (SECTION
2.2.3) ILL
DATA TABLES FOR CHAPTER 2 IV
DATA TABLES FOR CHAPTER 3 X
XII
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| spelling | Wunderlich, Anja Verfasser aut Influence of organic carbon sources and isotope exchange processes between water and nitrate on the fractionation of the stable isotopes 15 N/ 14 N and 18 O/ 16 O in dissolved nitrate during microbial denitrification in groundwater Anja A. L. Wunderlich 2012 XII, 70, XXXI S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier München, Techn. Univ., Diss., 2012 Zsfassung in dt. Sprache (DE-588)4113937-9 Hochschulschrift gnd-content Erscheint auch als Online-Ausgabe urn:nbn:de:bvb:91-diss-20121128-1113484-0-8 http://mediatum.ub.tum.de/node?id=1113484 Verlag kostenfrei Volltext https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20121128-1113484-0-8 Resolving-System DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=026223838&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Wunderlich, Anja Influence of organic carbon sources and isotope exchange processes between water and nitrate on the fractionation of the stable isotopes 15 N/ 14 N and 18 O/ 16 O in dissolved nitrate during microbial denitrification in groundwater |
| subject_GND | (DE-588)4113937-9 |
| title | Influence of organic carbon sources and isotope exchange processes between water and nitrate on the fractionation of the stable isotopes 15 N/ 14 N and 18 O/ 16 O in dissolved nitrate during microbial denitrification in groundwater |
| title_auth | Influence of organic carbon sources and isotope exchange processes between water and nitrate on the fractionation of the stable isotopes 15 N/ 14 N and 18 O/ 16 O in dissolved nitrate during microbial denitrification in groundwater |
| title_exact_search | Influence of organic carbon sources and isotope exchange processes between water and nitrate on the fractionation of the stable isotopes 15 N/ 14 N and 18 O/ 16 O in dissolved nitrate during microbial denitrification in groundwater |
| title_full | Influence of organic carbon sources and isotope exchange processes between water and nitrate on the fractionation of the stable isotopes 15 N/ 14 N and 18 O/ 16 O in dissolved nitrate during microbial denitrification in groundwater Anja A. L. Wunderlich |
| title_fullStr | Influence of organic carbon sources and isotope exchange processes between water and nitrate on the fractionation of the stable isotopes 15 N/ 14 N and 18 O/ 16 O in dissolved nitrate during microbial denitrification in groundwater Anja A. L. Wunderlich |
| title_full_unstemmed | Influence of organic carbon sources and isotope exchange processes between water and nitrate on the fractionation of the stable isotopes 15 N/ 14 N and 18 O/ 16 O in dissolved nitrate during microbial denitrification in groundwater Anja A. L. Wunderlich |
| title_short | Influence of organic carbon sources and isotope exchange processes between water and nitrate on the fractionation of the stable isotopes 15 N/ 14 N and 18 O/ 16 O in dissolved nitrate during microbial denitrification in groundwater |
| title_sort | influence of organic carbon sources and isotope exchange processes between water and nitrate on the fractionation of the stable isotopes 15 n 14 n and 18 o 16 o in dissolved nitrate during microbial denitrification in groundwater |
| topic_facet | Hochschulschrift |
| url | http://mediatum.ub.tum.de/node?id=1113484 https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20121128-1113484-0-8 http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=026223838&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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